#include<bits/stdc++.h>
// __builtin_ctz : no of trailing zeros
#define ll long long
#define pp pair<ll,ll>
#define mod 1000000007
#define trace(x) cerr<<#x<<": "<<x<<" "<<endl
#define trace2(x, y) cerr<<#x<<": "<<x<<" | "<<#y<<": "<<y<<endl
#define trace3(x, y, z) cerr<<#x<<":" <<x<<" | "<<#y<<": "<<y<<" | "<<#z<<": "<<z<<endl
#define sa(a,n) for(int i =0 ; i<n ; i++) cin>>a[i]
#define max3(a,b,c) max(a,max(b,c))
#define min3(a,b,c) min(a,min(b,c))
#define scan() int n; cin>>n ; int a[n]; for(int i = 0 ; i<n ; i++) cin>>a[i]
#define print(a,n) for(int i = 0 ; i < n ; i++) cout<<a[i]<<' '
using namespace std;
ll max(ll x, ll y)
{
    return x>y ? x : y;
}
ll min(ll x, ll y)
{
    return x<y ? x : y;
}
void _(ll&a , ll b)
{
    a=(a%mod+b%mod)%mod;
    a=(a+mod)%mod;
}
long long int modulo(long long int a,long long  int b, long long int n){
    long long int  x=1, y=a; 
    while (b > 0) {
        if (b%2 == 1) {
            x = (x*y) % n; // multiplying with base
        }
        y = (y*y) % n; // squaring the base
        b /= 2;
    }
    return x % n;
}
int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    ll n,k;cin >> n >> k;
    ll dp[k+1];ll ans=0;
    for(ll i=k;i>=1;i--)
    {
      ll g=k/i;
      ll dans=modulo(g,n,mod);
      for(ll j=2*i;j<=k;j+=i)_(dans,-dp[j]);
        _(ans,dans*i);
      dp[i]=dans;
    }
    cout << ans;
    }