题解 | #质数因子#

#include <iostream>
#include <cmath>
using namespace std;
int main() {
    long num;
    cin >> num;

    for(int i=2;i<=sqrt(num);i++){
        while(num%i==0){
            cout<<i<<" ";
            num/=i;
        }
    }
    if(num!=1)
        cout<<num<<endl;
    return 0;
}