题解

#include<bits/stdc++.h>
using namespace std;
long long m,n,k,ans;
int main()
{
	cin>>m>>n;
    k=n*m;
	if(n==m) ans--;
	for(long long i=1;i*i<=k;i++) if(k%i==0&&__gcd(i,k/i)==m) ans+=2;
	cout<<ans;
	return 0;
}