#include <bits/stdc++.h>
using namespace std;

int main(){
    int64_t N, K;
    cin >> N >> K;
    vector<int64_t> div;
    for(int64_t i=1; i*i<=K; i++) if(K%i == 0){
        div.push_back(i);
        if(i < K/i) div.push_back(K/i);
    }

    int64_t ans = 0;
    for(int64_t d1 : div){
        int64_t res = 1;
        for(int64_t d : {d1, K/d1}){
            res *= max(int64_t(0), min(d-1, 2*N+1-d));
        }
        ans += res;
    }
    cout << ans << endl;
    return 0;
}