#define _CRT_SECURE_NO_WARNINGS // #pragma warning(disable:4996)
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
#include <string>
#include <queue>
#include <functional>
#include <sstream>
#include <cmath>
#include <set>
#include <map>
using namespace std; 

#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define pb push_back
#define mp(a,b) make_pair(a,b)
#define all(a) a.begin(),a.end()
#define len(x) ((int)(x).size())
#define tmax(a,b,c) max((a),max((b),(c)))
#define debug(x) cerr << #x << " is " << x << endl;

typedef pair<int, int> Pii;
typedef vector<int> V;
typedef vector<vector<int> > VV;
typedef long long ll;
const int inf = 2e9;
const int mod = 1e9 + 7;
const long double eps = 1e-10;

const int maxsize = 5004170;
int p[5004170]; // 22237^2237

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

	rep(i,2,2237) {
		int t = i;
		while (t+i < maxsize) {
			t += i;
			p[t]++;
		}
	}

	ll ans = 0;
	rep(i,2,maxsize) {
		if (p[i]) continue;
		if (i*(N-1) > L) break;
		ans += L - (i*(N-1)) + 1;
	}
	
	cout << ans << endl;

	return 0;
}