#include <stdio.h>
int calculateGCD(int *a,int *b)
{
    int x = *a,y = *b;
    while(y!=0){
        int temp=y;
        y = x%y;
        x = temp;
    }
    return x;
}
int lcm(int *a,int *b){
    int g = gcd(a,b);
    return((*a)*(*b)) / g;
}
int main(){
    int x,y;
    scanf("%d%d",&x,&y);
    if(x<=0||y<=0){
        printf("Invalid input");
        return 0;
    }    
    int g=calculateGCD(&x,&y);
    int l=lcm(&x,&y);
    printf("%d%d",g,l);
    return 0;
}