#include <bits/stdc++.h>
#define ll long long
#define REP(i, n) for(int i=0;i<n;i++)

using namespace std;

ll n;

int main(){
    ll N, M;
    cin >> N >> M;

    ll res = 0;
    ll j;

    ll NN = 0;

    for(int i=0;i*i<=M;i++){
        NN = i+1;
    }

    for(j = 1; j*j <= M; j++) {
        ll low = (N-1)/j;
        ll high = M/j;

        ll NNN = max(j*NN, N);

        ll low2 = (NNN-1)/j;

        res += (high - low);
        if (NNN <= M) res += (high - low2);
    }

    cout << res << endl;
}