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- #include <iostream>
- using namespace std;
- //suma wartosci dzielnikow wlasciwych
- int suma_dzielnik(int n)
- {
- int suma = 1;
- int i;
- for(i = 2; i * i < n; ++i)
- if(n % i == 0)
- {
- suma += i;
- suma += n / i;
- }
- if(i * i == n)
- suma += i;
- return suma;
- }
- void czy_zaprzyjazniona(int y)
- {
- int k;
- for(int i = 1; i <= y; ++i)
- {
- k = suma_dzielnik(i);
- if(k > i && k <= y)
- if(i == suma_dzielnik(k))
- cout << i << '\t' << k << endl;
- }
- }
- const int N = 1000000;
- int main()
- {
- czy_zaprzyjazniona(N);
- return 0;
- }
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