题解 | 矩形游戏

#include <iostream>
using namespace std;
using ll=long long;


int main() {
    ll n;cin>>n;
    ll sum=n;
    for(ll i=2;i*i<=n;++i){
        while(n%i==0){
            n/=i;
            sum+=n;
        }
    }
    if(n>1){sum+=1;}
    cout<<sum;


}
// 64 位输出请用 printf("%lld")