/*
* Author: Arpit Bhayani
* https://arpitbhayani.me
*/
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <climits>
#include <deque>
#include <iostream>
#include <list>
#include <limits>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <vector>
#define ll long long
#define MIN(a, b) a < b ? a : b
using namespace std;
int gcd(int a, int b) {
if( b == 0 ) {
return a;
}
return gcd(b, a % b);
}
int main(int argc, char *argv[]) {
int t;
scanf("%d", &t);
while( t-- ) {
int n, m, g, l;
scanf("%d%d", &n, &m);
g = gcd(n, m);
l = (n * m) / g;
printf("%d %d\n", g, l);
}
return 0;
}
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