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

vector<int> div(int a) {
	vector<int> ret;
	for (int i = 2; i <= sqrt(a); ++i) {
		if (a % i == 0)ret.push_back(i);
	}
	return ret;
}

int combo(int a, int n) {
	if (n * 2 < a)return 0;
	if (a <= n)return a - 1;
	return n * 2 - a;
}

signed main() {
	int n, k;
	int ans = 0;
	cin >> n >> k;
	for (int i : div(k)) {
		int j = k - i;
		ans += combo(i, n) * combo(j, n);
	}
	cout << ans << endl;
}