#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef pair<ll, ll> pll;

typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<bool> vb;
typedef vector<pi> vpi;
typedef vector<vi> vvi;
typedef vector<vpi> vvpi;
typedef vector<vll> vvll;
typedef vector<vb> vvb;
typedef vector<vvi> vvvi;

#define all(x) x.begin(), x.end()

const int MOD = 1000000009;
const int INF = 2e9;

//TO_STRING
template <typename A, typename B>
string to_string(pair<A, B> p);
 
template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p);
 
template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p);
 
string to_string(const string& s) {
  return '"' + s + '"';
}

string to_string(char ch){
	string s;
	s += ch;
	return s;
}

string to_string(const char* s) {
  return to_string((string) s);
}
 
string to_string(bool b) {
  return (b ? "true" : "false");
}
 
string to_string(vector<bool> v) {
  bool first = true;
  string res = "{";
  for (int i = 0; i < static_cast<int>(v.size()); i++) {
    if (!first) {
      res += ", ";
    }
    first = false;
    res += to_string(v[i]);
  }
  res += "}";
  return res;
}
 
template <size_t N>
string to_string(bitset<N> v) {
  string res = "";
  for (size_t i = 0; i < N; i++) {
    res += static_cast<char>('0' + v[i]);
  }
  return res;
}
 
template <typename A>
string to_string(A v) {
  bool first = true;
  string res = "{";
  for (const auto &x : v) {
    if (!first) {
      res += ", ";
    }
    first = false;
    res += to_string(x);
  }
  res += "}";
  return res;
}
 
template <typename A, typename B>
string to_string(pair<A, B> p) {
  return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}
 
template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p) {
  return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " + 
  	to_string(get<2>(p)) + ")";
}
 
template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p) {
  return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " + 
  	to_string(get<2>(p)) + ", " + to_string(get<3>(p)) + ")";
}

//DEBUG 
void debug_out() { cerr << endl; }
 
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
  cerr << " " << to_string(H);
  debug_out(T...);
}

#ifdef LOCAL //compile with -DLOCAL
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

#define pb push_back
#define fi first
#define se second  

ll expmod(ll x, ll n, ll mod){
  //x ^ n % mod
  if(n == 0) return 1;
  else if(n % 2 == 0){
    ll temp = expmod(x, n / 2, mod);
    return (temp * temp) % mod;
  }
  else{
    return (expmod(x, n - 1, mod) * x) % mod;
  }
}

void solve() {
  ll n, k;
  cin >> n >> k;
  const ll mod = 1e9 + 7;
  vll dp(k + 10);
  dp[k] = 1;
  for (ll g = k - 1; g >= 1; g--) {
    ll muls = k / g;
    dp[g] = expmod(muls, n, mod);
    ll start = g + g;
    while (start <= k) {
      dp[g] -= dp[start];
      (dp[g] += mod) %= mod;
      start += g;
    }
  }
  ll ans = 0;
  for (int i = 1; i <= k; i++) {
    (ans += i * dp[i]) %= mod;
  }
  cout << ans << endl;
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);cout.tie(0);	
  int t = 1;
  // cin >> t;
  while (t--) {
    solve();
  }
} 

Measured memory_bytes: 3996