#include <stdio.h>

unsigned long long int gcd(unsigned long long int a,unsigned long long int b){
	unsigned long long int temp,r;
	while(1){
		if(a>b){
			temp=a;
			a=b;
			b=temp;
		}
		else{
			r=b%a;
			if(r==0)
				break;
			b=r;
		}
	}
	return a;
}

int main(){
	unsigned long long int A,B;
	scanf("%llu %llu",&A,&B);

	unsigned long long int a,gcd_ab,gcd_aa,calc;
	a=A+B;

	gcd_aa=gcd(a,A);
	gcd_ab=gcd(a,B);

	calc = gcd_ab*gcd_aa;

	unsigned long long int i,prime_mul=1;
	unsigned long long int prime[100000];
	int j,k,num=0;
	prime[0] = 0;
	while(1){
		if(gcd(a,calc)==calc)
			break;
		i=2;
		while(1){
			if(prime[0]!=0){
				while(1){
					if(gcd(i,prime_mul)==1)
						break;
					i++;
				}
			}else i++;
			if(calc % i == 0){
				calc /= i;
				prime[num] = i;
				prime_mul*=prime[num];
				break;
			}
			//printf("%llu ",i);

		}
		//printf("%llu\n",calc);
		num++;
	}

	//printf("%llu\n",calc);
	return 0;
}