#include <iostream>

using namespace std;

int calcGCD(int a, int b);

int main(void)
{
    int a,b;
    int GCD;
    int LCM;
    
    while (cin >> a >> b) {
        GCD = calcGCD(a, b);
        if (GCD == -1) {
            return -1;
        }
        
        LCM = a / GCD * b;
        cout << GCD << " " << LCM << endl;
    }
    
    return 0;
}

int calcGCD(int a, int b)
{
    while (a > 0 && b > 0) {
        if (a > b) {
            a %= b;
        } else {
            b %= a;
        }
    }
    
    if (a == 0) {
        return b;
    } else if (b == 0){
        return a;
    } else {
        return -1;
    }
}