fork download
  1. #include<iostream>
  2. #include<cmath>
  3. using namespace std;
  4.  
  5. int main() {
  6. long long n;
  7. cin>>n;
  8. long long sum=0;
  9. for (int i =1; i <=sqrt(n); i++) {
  10. if(n % i == 0) {
  11. sum=i+sum;
  12. }
  13. if(i!=n/i){
  14. sum+=n/i;
  15. }
  16. }cout<<sum;
  17. }
Success #stdin #stdout 0s 5316KB
stdin
9
stdout
17