#include "bits/stdc++.h"
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using vi = vector<int>;
using vl = vector<ll>;
using vvi = vector<vi>;
using vvl = vector<vl>;
const ll INF = 1LL << 60;
const ll MOD = 1000000007;
template <class T>
bool chmax(T &a, const T &b) {
    return (a < b) ? (a = b, 1) : 0;
}
template <class T>
bool chmin(T &a, const T &b) {
    return (b < a) ? (a = b, 1) : 0;
}
template <class C>
void print(const C &c, std::ostream &os = std::cout) {
    std::copy(std::begin(c), std::end(c), std::ostream_iterator<typename C::value_type>(os, " "));
    os << std::endl;
}

// list up all factors
template <typename T>
set<T> factors(T a) {
    set<T> facs;
    for (T i = 1; i * i <= a; ++i) {
        if (a % i == 0) {
            facs.insert(i);
            facs.insert(a / i);
        }
    }
    return facs;
}

int main() {
    ll n, k;
    cin >> n >> k;
    auto facs = factors(k);
    ll ret = 0;
    for (auto &f : facs) {
        ll ac = f;
        ll bd = k / f;
        ll nac = ac - 1;
        if (n < ac - 1)
            nac = max(0LL, nac - 2 * (ac - 1 - n));
        ll nbd = bd - 1;
        if (n < bd - 1)
            nbd = max(0LL, nbd - 2 * (bd - 1 - n));

        ret += nac * nbd;
    }
    cout << ret << "\n";
    return 0;
}