#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001



int main(){
	
	long long N,K;
	cin>>N>>K;
	long long M = N-K;
	vector<long long> y;
	for(long long i=1;i*i<=M;i++){
		if(M%i==0){
			y.push_back(i);
			if(i*i!=M)y.push_back(M/i);
		}
	}
	
	int ans = 0;
	rep(i,y.size()){
		if(N%y[i]==K)ans++;
	}
	cout<<ans<<endl;
		
	
	return 0;
}