백준 BOJ 2609번

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코드

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int a = in.nextInt();
        int b = in.nextInt();
        int c = gcd(a, b);
        System.out.println(c);
        System.out.println(a*b/c);
    }
    public static int gcd(int a, int b) {
        if(b == 0) return a;
        return gcd(b, a%b);
    }
}