#include<iostream>
using namespace std;

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

int main()
{
 while(1){
	int a,b;
	cin>>a>>b;

	if(cin.eof()) break;
	if(a==0||b==0)break;
	
	int g=gcd(a,b);
	cout<<g<<' '<<a/g*b<<endl;
 }
 return 0;
}
	