#include<bits/stdc++.h>

using namespace std;

using int64 = long long;
const int mod = 1e9 + 7;
const int inf = (1 << 30) - 1;
const int64 infll = (1LL << 61) - 1;

struct IoSetup {
  IoSetup() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(10);
    cerr << fixed << setprecision(10);
  }
} iosetup;

template< typename T >
ostream &operator<<(ostream &os, const vector< T > &v) {
  for(int i = 0; i < (int) v.size(); i++) {
    os << v[i] << (i + 1 != v.size() ? " " : "");
  }
  return os;
}

template< typename T >
istream &operator>>(istream &is, vector< T > &v) {
  for(T &in : v) is >> in;
  return is;
}

template< typename T1, typename T2 >
inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }

template< typename T1, typename T2 >
inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }

template< typename T = int64 >
vector< T > make_v(size_t a) {
  return vector< T >(a);
}

template< typename T, typename... Ts >
auto make_v(size_t a, Ts... ts) {
  return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...));
}

template< typename T, typename V >
typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) {
  t = v;
}

template< typename T, typename V >
typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) {
  for(auto &e : t) fill_v(e, v);
}

template< int mod >
struct ModInt {
  int x;

  ModInt() : x(0) {}

  ModInt(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}

  ModInt &operator+=(const ModInt &p) {
    if((x += p.x) >= mod) x -= mod;
    return *this;
  }

  ModInt &operator-=(const ModInt &p) {
    if((x += mod - p.x) >= mod) x -= mod;
    return *this;
  }

  ModInt &operator*=(const ModInt &p) {
    x = (int) (1LL * x * p.x % mod);
    return *this;
  }

  ModInt &operator/=(const ModInt &p) {
    *this *= p.inverse();
    return *this;
  }

  ModInt operator-() const { return ModInt(-x); }

  ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }

  ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }

  ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }

  ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }

  bool operator==(const ModInt &p) const { return x == p.x; }

  bool operator!=(const ModInt &p) const { return x != p.x; }

  ModInt inverse() const {
    int a = x, b = mod, u = 1, v = 0, t;
    while(b > 0) {
      t = a / b;
      a -= t * b;
      swap(a, b);
      u -= t * v;
      swap(u, v);
    }
    return ModInt(u);
  }

  friend ostream &operator<<(ostream &os, const ModInt< mod > &p) {
    return os << p.x;
  }

  friend istream &operator>>(istream &is, ModInt< mod > &a) {
    long long x;
    is >> x;
    a = ModInt< mod >(x);
    return (is);
  }

};

using modint = ModInt< mod >;

vector< int64_t > divisor(int64_t n) {
  vector< int64_t > ret;
  for(int64_t i = 1; i * i <= n; i++) {
    if(n % i == 0) {
      ret.push_back(i);
      if(i * i != n) ret.push_back(n / i);
    }
  }
  sort(begin(ret), end(ret));
  return (ret);
}


template< int mod >
struct Combination {
  vector< int64_t > mfact, rfact;

  Combination(int sz) : mfact(sz + 1), rfact(sz + 1) {
    mfact[0] = 1;
    for(int i = 1; i < mfact.size(); i++) {
      mfact[i] = mfact[i - 1] * i % mod;
    }
    rfact[sz] = inv(mfact[sz]);
    for(int i = sz - 1; i >= 0; i--) {
      rfact[i] = rfact[i + 1] * (i + 1) % mod;
    }
  }

  int64_t fact(int k) const {
    return (mfact[k]);
  }

  int64_t pow(int64_t x, int64_t n) const {
    int64_t ret = 1;
    while(n > 0) {
      if(n & 1) (ret *= x) %= mod;
      (x *= x) %= mod;
      n >>= 1;
    }
    return (ret);
  }

  int64_t inv(int64_t x) const {
    return (pow(x, mod - 2));
  }

  int64_t P(int n, int r) const {
    if(r < 0 || n < r) return (0);
    return (mfact[n] * rfact[n - r] % mod);
  }

  int64_t C(int p, int q) const {
    if(q < 0 || p < q) return (0);
    return (mfact[p] * rfact[q] % mod * rfact[p - q] % mod);
  }

  int64_t H(int n, int r) const {
    if(n < 0 || r < 0) return (0);
    return (r == 0 ? 1 : C(n + r - 1, r));
  }
};

int main() {
  int N, K;
  cin >> N >> K;

  modint ret = 0;
  auto div = divisor(N);
  Combination< mod > uku(1);
  vector< modint > dp(div.size());
  for(int i = 0; i < div.size(); i++) {
    dp[i] += uku.pow(K, (div[i] + 1) / 2);
    for(int j = i - 1; j >= 0; j--) {
      if(div[i] % div[j] == 0) dp[i] -= dp[j];
    }
    if(div[i] % 2 == 0) ret += dp[i] * div[i] / 2;
    else ret += dp[i] * div[i];
  }
  cout << ret << endl;
}







Measured memory_bytes: 256