import java.util.Scanner;
public class DelitelNasobek {
static Scanner sc = new Scanner(System.in);
public static void main(String[] args) {
    boolean ok = true;
    do{
    int number = sc.nextInt();
    if(number>0){
        int number2 = sc.nextInt();
        int min=number, max=number2;
    if(number>number2){
        max=number;
        min=number2;
    }
    for (long i = min; i >= 1; i--) {
        if(number%i==0 && number2%i==0){
            System.out.print(i + " ");
            break;
        }
    }
    for (long i = max; i <=min*max ; i+=max) {
        if(i%number==0 && i%number2==0){
            System.out.print(i);
            break;
        }
    }
        System.out.println("");
    }else ok = false;
    }while(ok);
}