题解 | #质数因子#

#include <iostream>
using namespace std;

int main() {
    int num;
    while (cin >> num){
        for(int i = 2; i * i <= num; i++){
            if (num % i == 0){
                while (num % i == 0){
                    cout << i << " " ;
                    num /= i;
                }
            }
        }
        if (num != 1){
            cout << num << endl;
        }
    }

    return 0;
}