C++ :

#include <cstdio>
int main(){
    long long x0,y0;
    if(scanf("%lld %lld",&x0,&y0)!=2) return 0;
    if(y0 % x0 != 0){ puts("0"); return 0; }
    long long k = y0 / x0;                   /* P=x0*p, Q=x0*q, gcd(p,q)=1, p*q=k */
    long long w = 0;                         /* 答案 = 2^ω(k) */
    for(long long p=2;p*p<=k;p++)
        if(k%p==0){ w++; while(k%p==0) k/=p; }
    if(k>1) w++;
    printf("%lld\n", 1LL<<w);
    return 0;
}