import java.util.*;
import java.util.regex.*;
public class A{
	public static void main(String args[]){
		Scanner sc=new Scanner(System.in);
		int a=sc.nextInt();
		int b=sc.nextInt();
		int[] d=kakunou(a*b);
		int[] e=kakunou(a+b);
		out_of_loop:
		for(int i=d.length-1; i>=0; i--){
			for(int j=e.length-1; j>=0; j--){
				if(d[i]==e[j]){
					System.out.print(d[i]);
					break out_of_loop;
				}
			}
		}
	}
		
		
		public static int[] kakunou(int c){
			int[] array = new int[c];
		for(int i=1; i<=c/2; i++){
			if(c%i==0){
			array[i-1]=i;
			array[i]=c/i;
			}
		}
		Arrays.sort(array);
		return array;
		}
}