#include<stdio.h>

 long long int gcd(long long int C, long long int D) {
	 long long int div1, r, tmp1, tmp2;
	
	 div1 = D;
	 r = C % D;

	 while ((r != 0)&&(r != 1)) {
		 tmp1 = div1;
		 tmp2 = r;
		 div1 = r;
		 r = tmp1 % tmp2;
	 }
	 if (r == 1) return 1;
	 else return div1;
}

int main(void) {
	long long int A, B;
	long long int g, ans;

	scanf("%lld", &A);
	scanf("%lld", &B);

	if(A>B) g = gcd(A, B);
	else g = gcd(B, A);

	if (g != 1) {
		long long int tmp = (A + B) / g;
		if (tmp > g) ans = g * gcd(tmp, g);
		else ans = g * gcd(g, tmp);
	}
	else ans = 1;

	printf("%lld\n", ans);
	
	return 0;

}