#pragma GCC target("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using ull=unsigned long long;
using pii=pair<int,int>;
using pll=pair<ll,ll>;
using graph=vector<ll>;
#define cY cout <<"Yes\n"
#define cN cout <<"No\n"
#define csp cout <<" "
#define out(a) cout <<(a)
#define cout(a) cout <<(a) <<"\n"

vector<pll> div(ll x){
    vector<pll> r;
    for(int i=1; i*i<=x; i++){
        if(x%i==0)r.push_back(make_pair(i,x/i));
    }
    return r;
}
int main(){
    ll n,k,ans=0;;
    cin >>n >>k;
    vector<pll> a=div(k);
    for(auto i:a){
        ll A=min({n,i.first-1,max(2*n-i.first+1,0LL)});
        ll B=min({n,i.second-1,max(2*n-i.second+1,0LL)});
        ans+=2*A*B;
    }
    cout(ans);
}