#include<bits/stdc++.h>
#define ll long long
#define ld long double
#define fi first
#define se second
#define pll pair<ll, ll>
#define INF (1ll << 60)
#define ppl pair<pll, pll>
#define vl vector<ll>
#define vi vector<int>
#define vvi vector<vi>
#define vvl vector<vl>
#define FOR(i,a,b) for(ll i=a;i<b;++i)
#define pb push_back
#define ALL(X) X.begin(),X.end()
#define endl (char)10
using namespace std;

int main() {
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    ll n, m;
    cin >> n >> m;
    ll res = 0;
    ll limit = sqrt(m);
    FOR(i, 1, limit+1){
        ll a = max(i*i, n);
        ll b = m;
        ll lower = a/i;
        ll upper = b/i;
        res += (upper-lower)*2;
        if(i * lower == a){
            res += 2;
        }
        if(a == i*i){
            res--;
        }
    }
    cout << res << endl;
    return 0;
}