HJ6 质数因子

#include <iostream>
using namespace std;

int main() {
    int num;
    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;
    }
}
// 64 位输出请用 printf("%lld")