static int properDivisorSum ( int n ) {
  int sum = 0 ;
  for ( int i = 1 ;
  i <= n ;
  ++ i ) {
    for ( int j = 1 ;
    j * j <= i ;
    ++ j ) {
      if ( i % j == 0 ) {
        if ( i / j == j ) sum += j ;
        else sum += j + i / j ;
      }
    }
    sum = sum - i ;
  }
  return sum ;
}

static int properDivisorSum ( int n ) { int sum = 0 ; for ( int i = 1 ; i <= n ; ++ i ) { for ( int j = 1 ; j * j <= i ; ++ j ) { if ( i % j == 0 ) { if ( i / j == j ) sum += j ; else sum += j + i / j ; } } sum = sum - i ; } return sum ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (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 (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))) consequence: (expression_statement (assignment_expression left: (identifier) right: (identifier))) alternative: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))))))))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))))) (return_statement (identifier))))