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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int numdivisors(int n) {
  5.     int i = 1, t = 1, c = 0;
  6.     while(++i <= n) {
  7.         c = 1;
  8.         while(n % i == 0) {
  9.             n /= i;
  10.             c++;
  11.         }
  12.         t *= c;
  13.     }
  14.     return t;
  15. }
  16.  
  17. int main() {
  18.     int i = 1;
  19.     while(numdivisors((i * (i + 1)) / 2) < 500) i++;
  20.     cout << ((i * (i + 1)) / 2) << endl;
  21. }
Success #stdin #stdout 0.5s 2724KB
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https://ideone.com/Oz0zIX
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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