#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <stdio.h>
#include <queue>
#include <deque>
#include <cstdio>
#include <set>
#include <map>
#include <bitset>
#include <stack>
#include <cctype>
using namespace std;
int main() {
	long long n, k;
	cin >> n >> k;
	long long ans = 0;
	for (long long i = 2; i * i <= k; i++) {
		if (i <= 2 * n) {
			if (k % i == 0) {
				if (k / i <= 2 * n) {
					ans += (min(2 * n - i + 1, i - 1)) * (min(2 * n - k / i + 1, k / i - 1));
				}
			}
		}
	}
	cout << ans * 2 << endl;
}