Algorithms_in_C++ 1.0.0
Set of algorithms implemented in C++.
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Program to return the Aliquot Sum of a number. More...
#include <cassert>
#include <iostream>
Namespaces | |
namespace | math |
for IO operations | |
Functions | |
uint64_t | math::aliquot_sum (const uint64_t num) |
to return the aliquot sum of a number | |
static void | test () |
Self-test implementations. | |
int | main () |
Main function. | |
Program to return the Aliquot Sum of a number.
The Aliquot sum \(s(n)\) of a non-negative integer n is the sum of all proper divisors of n, that is, all the divisors of n, other than itself.
Formula:
\[ s(n) = \sum_{d|n, d\neq n}d. \]
For example; \(s(18) = 1 + 2 + 3 + 6 + 9 = 21 \)
int main | ( | void | ) |
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static |
Self-test implementations.