#include<bits/stdc++.h>
using namespace std;

int gcd(long long a,long long b)
{
    if (b == 0)
        return a;
    else
        return gcd (b, a % b);
}
int lcm (long a, long b)
{
    return a / gcd(a, b) * b;
}
int main()
{
    int n;
    cin>>n;
    while(n--)
    {
        long long a,b;
        cin>>a>>b;
        cout<<gcd(a,b)<<" "<<lcm(a,b)<<endl;
    }
}