#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) begin(v),end(v)
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
using ll = long long;
using pii = pair<int, int>;
constexpr ll INF = 1ll<<30;
constexpr ll longINF = 1ll<<60;
constexpr ll MOD = 1000000007;
constexpr bool debug = false;
//---------------------------------//

int main() {
	ll N, K;
	cin >> N >> K;
	ll ans = 0;
	for (ll x = 1; x * x <= K; ++x) {
		if (K % x) continue;
		const ll y = K / x;
		auto func = [&](ll a) -> ll {
			if (a <= 1 || 2 * N < a) return 0;
			if (a > N) return N - (a - N) + 1;
			return a - 1;
		};
		ans += func(x) * func(y);
	}
	ans *= 2;
	cout << ans << endl;
}