#include <iostream>
using namespace std;
using ll = long long;
ll N, K;

int main() {
  cin >> N >> K;
  
  ll ans = 0;
  for(ll i = 1; i * i <= K; ++i) {
    if(i > N*2 || K / i > N*2) continue;
    if(K % i == 0) {
      ll L = (i > N ? N * 2 - i + 1  : i - 1);
      ll R = (K / i > N ? N * 2 - K / i + 1: K / i - 1);
      ll val = L * R;
      if(K / i == i) ans += val;
      else ans += val * 2;
    }
  }
  cout << ans << '\n';
  return 0;
}