public static void main ( String [ ] args ) {
  long N = sc . nextInt ( ) ;
  long K = sc . nextInt ( ) ;
  if ( N == 1 ) {
    System . out . println ( K ) ;
    return ;
  }
  ArrayList < Long > divisor = new ArrayList < > ( ) ;
  for ( long i = 2 ;
  i * i <= N ;
  i ++ ) {
    if ( N % i != 0 ) continue ;
    divisor . add ( i ) ;
    if ( i * i != N ) {
      divisor . add ( N / i ) ;
    }
  }
  divisor . add ( N ) ;
  Collections . sort ( divisor ) ;
  HashMap < Long , Long > map = new HashMap < > ( ) ;
  map . put ( 1L , K ) ;
  for ( long d : divisor ) {
    long add = pow ( K , ( d + 1 ) / 2 ) - K ;
    for ( long i = 2 ;
    i * i <= d ;
    i ++ ) {
      if ( d % i != 0 ) continue ;
      add += MOD - map . get ( i ) ;
      if ( i * i != d ) add += MOD - map . get ( d / i ) ;
    }
    map . put ( d , add % MOD ) ;
  }
  long ans = 0 ;
  for ( long k : map . keySet ( ) ) {
    ans += ( k % 2 == 0 ? k / 2 : k ) * map . get ( k ) ;
  }
  System . out . println ( ans % MOD ) ;
}

public static void main ( String [ ] args ) { long N = sc . nextInt ( ) ; long K = sc . nextInt ( ) ; if ( N == 1 ) { System . out . println ( K ) ; return ; } ArrayList < Long > divisor = new ArrayList < > ( ) ; for ( long i = 2 ; i * i <= N ; i ++ ) { if ( N % i != 0 ) continue ; divisor . add ( i ) ; if ( i * i != N ) { divisor . add ( N / i ) ; } } divisor . add ( N ) ; Collections . sort ( divisor ) ; HashMap < Long , Long > map = new HashMap < > ( ) ; map . put ( 1L , K ) ; for ( long d : divisor ) { long add = pow ( K , ( d + 1 ) / 2 ) - K ; for ( long i = 2 ; i * i <= d ; i ++ ) { if ( d % i != 0 ) continue ; add += MOD - map . get ( i ) ; if ( i * i != d ) add += MOD - map . get ( d / i ) ; } map . put ( d , add % MOD ) ; } long ans = 0 ; for ( long k : map . keySet ( ) ) { ans += ( k % 2 == 0 ? k / 2 : k ) * map . get ( k ) ; } System . out . println ( ans % MOD ) ; }
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