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

int main() {
    ll n, k; cin >> n >> k;
    ll m = n - k;
    int res = 0;
    for (ll i = 1; i * i <= m; i++) {
        if (m % i) continue;
        if (n % i == k) ++res;
        if (i * i < m && n % (m / i) == k) ++res;
    }
    cout << res << endl;
}