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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. int suma_dzielnikow(int n){
  6. 	int suma = 0;
  7. 	for( int i = 1; i <=n; i++)
  8. 	if(n%i==0)
  9. 	suma += i;
  10. 	return suma;
  11. }
  12.  
  13. int suma_dzielnikow_2(int n){
  14. 	int suma = n + 1;
  15. 	for( int i = 2; i <= sqrt(n); i++){
  16. 		if(n%i==0){
  17. 			suma +=i;
  18. 			if(i!=n/i)
  19. 				suma +=n/i;}
  20. 	}
  21. 	return suma;
  22. }
  23.  
  24. int main() {
  25. 	cout << suma_dzielnikow_2(7) << endl;
  26. 	cout << suma_dzielnikow_2(25) << endl;
  27.  
  28. 	return 0;
  29. }
Success #stdin #stdout 0s 5284KB
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8
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https://ideone.com/1V3vTl
language:
C++ (gcc 8.3)
created:
22 hours ago
visibility:
public

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