#include <stdio.h>

long gcd(long x, long y)
{
	long r;
	if (y > x) {
		r = x;
		x = y;
		y = r;
	}
	while (y > 0) {
		r = x % y;
		x = y;
		y = r;
	}
	return x;
}

int main(void)
{
	long A, B;
	scanf("%ld%ld", &A, &B);
	printf("%ld", gcd(gcd(A, B) * gcd(A, B), A + B));
	return 0;
}