#include <iostream>
#include <stdio.h>

int gcd( int a, int b )
{
    int temp;

    if( a < b ) { temp = a; a = b; b = temp; }
    if( b < 1 ) return -1;

    if( a % b == 0 ) return b;
    return gcd( b, a % b );
}


int main(){
  int a,b;
  while(1){
    cin >> a >> b;
    if(cin.eof())
      break;
    int g=gcd(a,b);
    //printf("%d %d\n",g,a/g*b);
    cout << g << a/g*b << endl;
  }

  return 0;
}

