/*快读+手写*/
#include <bits/stdc++.h>
using namespace std;
int q,a,b;
int gcd(int x,int y){
	if(y==0)
	return x;
	return gcd(y,x%y);
}
int lcm(int a,int b){
	return a*b/gcd(a,b);
}
inline void write(int x) {
     if(x<0) putchar('-'),x=-x;
     if(x>9) write(x/10);
     putchar(x%10+'0');
}
inline int read() {
    int x=0,f=1;
    char c=getchar();
    while(c<'0'||c>'9'){if(c=='-') f=-1;c=getchar();}
    while(c>='0'&&c<='9') x=x*10+c-'0',c=getchar();
    return x*f;
}
signed main(){
	q=read();
	while(q--){
		a=read(),b=read();
		write(gcd(a,b)),putchar(' '),write(lcm(a,b)),putchar('\n');
	}
	return 0;
}