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

void fast_io() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
}

int main() {
	fast_io();
	long long n, k;
	cin >> n >> k;
	vector<long long> divs;
	for (long long i = 1; i * i <= n - k; i++) {
		if ((n - k) % i == 0) {
			divs.push_back(i);
			if (i * i != n - k) {
				divs.push_back((n - k) / i);
			}
		}
	}
	int ans = 0;
	for (long long a : divs) {
		if (n % a == k) {
			ans++;
		}
	}
	cout << ans << endl;
}