Java代码：求合数的所有质因子

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        for (int i = 2; i <= Math.sqrt(n); i++) {
            while (n % i == 0) {
                System.out.print(i + ' ');
                n /= i;
            }
        }
        if (n > 1) {
            System.out.print(n);
        }
    }
}