#include <iostream>
#include <vector>
#include <cstdio>
#include <sstream>
#include <map>
#include <string>
#include <algorithm>
#include <queue>
#include <cmath>
#include <functional>
#include <set>
#include <ctime>
#include <random>
#include <chrono>
#include <cassert>
#include <tuple>
#include <utility>
using namespace std;

namespace {
  using Integer = long long; //__int128;
  template<class T, class S> istream& operator >> (istream& is, pair<T,S>& p){return is >> p.first >> p.second;}
  template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;}
  template<class T> istream& operator ,  (istream& is, T& val){ return is >> val;}
  template<class T, class S> ostream& operator << (ostream& os, const pair<T,S>& p){return os << p.first << " " << p.second;}
  template<class T> ostream& operator << (ostream& os, const vector<T>& vec){for(size_t i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"":" "); return os;}
  template<class T> ostream& operator ,  (ostream& os, const T& val){ return os << " " << val;}

  template<class H> void print(const H& head){ cout << head; }
  template<class H, class ... T> void print(const H& head, const T& ... tail){ cout << head << " "; print(tail...); }
  template<class ... T> void println(const T& ... values){ print(values...); cout << endl; }

  template<class H> void eprint(const H& head){ cerr << head; }
  template<class H, class ... T> void eprint(const H& head, const T& ... tail){ cerr << head << " "; eprint(tail...); }
  template<class ... T> void eprintln(const T& ... values){ eprint(values...); cerr << endl; }

  class range{ Integer start_, end_, step_; public: struct range_iterator{ Integer val, step_; range_iterator(Integer v, Integer step) : val(v), step_(step) {} Integer operator * (){return val;} void operator ++ (){val += step_;} bool operator != (range_iterator& x){return step_ > 0 ? val < x.val : val > x.val;} }; range(Integer len) : start_(0), end_(len), step_(1) {} range(Integer start, Integer end) : start_(start), end_(end), step_(1) {} range(Integer start, Integer end, Integer step) : start_(start), end_(end), step_(step) {} range_iterator begin(){ return range_iterator(start_, step_); } range_iterator   end(){ return range_iterator(  end_, step_); } };

  inline string operator "" _s (const char* str, size_t size){ return move(string(str)); }
  constexpr Integer my_pow(Integer x, Integer k, Integer z=1){return k==0 ? z : k==1 ? z*x : (k&1) ? my_pow(x*x,k>>1,z*x) : my_pow(x*x,k>>1,z);}
  constexpr Integer my_pow_mod(Integer x, Integer k, Integer M, Integer z=1){return k==0 ? z%M : k==1 ? z*x%M : (k&1) ? my_pow_mod(x*x%M,k>>1,M,z*x%M) : my_pow_mod(x*x%M,k>>1,M,z);}
  constexpr unsigned long long operator "" _ten (unsigned long long value){ return my_pow(10,value); }

  inline int k_bit(Integer x, int k){return (x>>k)&1;} //0-indexed

  mt19937 mt(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count());

  template<class T> string join(const vector<T>& v, const string& sep){ stringstream ss; for(size_t i=0; i<v.size(); i++){ if(i>0) ss << sep; ss << v[i]; } return ss.str(); }

  inline string operator * (string s, int k){ string ret; while(k){ if(k&1) ret += s; s += s; k >>= 1; } return ret; }
}
constexpr long long mod = 9_ten + 7;

map<deque<int>, int> m;

void rec(deque<int> v, int pos, long long n, long long k){
  if(pos == (n+1)/2){
    for(int i=0; i<n; i++){
      m[v]++;
      v.push_back( v.front() );
      v.pop_front();
    }
    return;
  }

  for(int i=1; i<=k; i++){
    v[pos] = v[n-1-pos] = i;
    rec(v, pos+1, n,k);
  }
}

int test(long long n, long long k){
  deque<int> v(n);
  rec(v, 0, n,k);

  for(auto p : m ){
    vector<int> v(p.first.begin(), p.first.end());
    println(join(v, " "), " : ", p.second);
  }
  return m.size();
}

vector<long long> divisors(long long N){
  if(N==1) return {1LL};
  
  vector<long long> ret;
  ret.push_back(1);
  ret.push_back(N);

  for(long long i=2; i*i<=N; i++){
    if(N%i==0){
      ret.push_back(i);
      if(i*i != N) ret.push_back(N/i);
    }
  }

  sort(ret.begin(), ret.end());
  return ret;
}
int main(){
  long long n,k;
  cin >> n,k;

  long long nn = n;
  long long ans = 0;
  auto d = divisors(nn);

  vector<long long> dp(d.size(), -1);
  for(long long i : range(d.size())){
    long long x = d[i];
    dp[i] = my_pow_mod(k, (x+1)/2, mod);
    for(long long j : range(d.size())){
      long long y = d[j];
      if(y>=x) break;
      if(x%y == 0){
        dp[i] = (dp[i] - dp[j] + mod) % mod;
      }
    }
    (ans += dp[i] * (x%2?x:x/2) % mod) %= mod;
  }
  //println(test(nn,k));
  println(ans);

  return 0;
}


Measured memory_bytes: 256