Sum of divisors P95972


Statement
 

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Write a function that returns the sum of the divisors of a number @n@.

For instance, the sum of the divisors of 28 is 1+2+4+7+14+28=561+2+4+7+14+28 = 56.

Interface

C++,C 
int sum_divisors(int x);
Java 
public static int sumDivisors(int x);
Python 
sum_divisors(x)  # returns int
 
sum_divisors(x: int) -> int

Precondition

1≤1 \le @n@ ≤108\le 10^8.

Observation

You only need to submit the required procedure; your main program will be ignored.

Public test cases

  • Input/Output

    sum_divisors(28) → 56
    sum_divisors(1) → 1
    sum_divisors(100) → 217
    • Information
    Author
    Salvador Roura
    Language
    English
    Translator
    Salvador Roura
    Original language
    Catalan
    Other languages
    Catalan
    Official solutions
    C C++ Java Python
    User solutions
    C C++ Java JavaScript Python