#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
#define rep(i,s,e) for(i64 (i) = (s);(i) < (e);(i)++)
#define all(x) x.begin(),x.end()
#define let auto const

int main() {
  i64 N, K;
  cin >> N >> K;
  i64 ans = 0;
  for(i64 i = 1;i * i <= K;i++) {
    if(K % i == 0) {
      i64 j = K / i;
      i64 ni = min(i - 1, N - 1);
      i64 nj = min(j - 1, N - 1);
      ans += ni * nj;
      if(K / i != i) ans += ni * nj;
    }
  }

  cout << ans << endl;
}