#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
#define DUMP(x)  cout << #x << " = " << (x) << endl;
#define FOR(i, m, n) for(ll i = m; i < n; i++)
#define IFOR(i, m, n) for(ll i = n - 1; i >= m; i-- )
#define REP(i, n) FOR(i,0,n)
#define IREP(i, n) IFOR(i,0,n)
#define FOREACH(x,a) for(auto& (x) : (a) )
#define ALL(v) (v).begin(), (v).end()

int main(){
  ll N, K; cin >> N >> K;
  ll ans = 0;
  for(ll i=2; i*i<=K && i<=2*N; ++i){
    if(K%i != 0 || K/i>2*N) continue;
    ll t = 1;
    if(i<=N+1) t *= (i-1);
    else t *= 2*N-i+1; 
    if(K/i<=N+1) t *= (K/i-1);
    else t *= (2*N-K/i+1);
    if(i != K/i) ans += t*2;
    else ans += t;
  }
  cout << ans << endl;
}