public static void main ( String [ ] args ) {
  Scanner input = new Scanner ( System . in ) ;
  int l = input . nextInt ( ) ;
  int r = input . nextInt ( ) ;
  int x = input . nextInt ( ) ;
  int y = input . nextInt ( ) ;
  if ( y % x != 0 ) {
    System . out . println ( 0 ) ;
  }
  else {
    int ans = 0 ;
    int n = y / x ;
    for ( int d = 1 ;
    d * d <= n ;
    d ++ ) {
      if ( n % d == 0 ) {
        int c = n / d ;
        if ( l <= c * x && c * x <= r && l <= d * x && d * x <= r && gcd ( c , d ) == 1 ) {
          if ( d * d == n ) {
            ans ++ ;
          }
          else {
            ans += 2 ;
          }
        }
      }
    }
    System . out . println ( ans ) ;
  }
}

public static void main ( String [ ] args ) { Scanner input = new Scanner ( System . in ) ; int l = input . nextInt ( ) ; int r = input . nextInt ( ) ; int x = input . nextInt ( ) ; int y = input . nextInt ( ) ; if ( y % x != 0 ) { System . out . println ( 0 ) ; } else { int ans = 0 ; int n = y / x ; for ( int d = 1 ; d * d <= n ; d ++ ) { if ( n % d == 0 ) { int c = n / d ; if ( l <= c * x && c * x <= r && l <= d * x && d * x <= r && gcd ( c , d ) == 1 ) { if ( d * d == n ) { ans ++ ; } else { ans += 2 ; } } } } System . out . println ( ans ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal))))) alternative: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (identifier)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) consequence: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (identifier)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier))) right: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))) right: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))) right: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))) right: (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier))) right: (decimal_integer_literal)))) consequence: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))) consequence: (block (expression_statement (update_expression (identifier)))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))))))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))))