#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
signed main() {
  ios::sync_with_stdio(false); cin.tie(0);
  long long n, k;
  cin >> n >> k;
  long long ans = 0;
  for (long long x = 1; x * x <= k; x++) {
    if (k % x || x > 2 * n || (k / x) > 2 * n || x < 2 || (k / x) < 2) continue;
    long long a, b;
    if (x - 1 <= n) a = x - 1;
    else a = 2 * n - x + 1;
    if (k / x - 1 <= n) b = k / x - 1;
    else b = 2 * n - k / x + 1;
    if (x != k / x) ans += a * b * 2;
    else ans += a * b;
    //cerr << x << " " << k / x << " " << a << " " << b << endl;
  }
  cout << ans << endl;
  return 0;
}