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gikf 67de105117 fix(curriculum): clean-up Project Euler 241-260 (#42879)
* fix: clean-up Project Euler 241-260

* fix: typo

* Update curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-255-rounded-square-roots.md

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>
2021-07-16 12:21:45 +02:00

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id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
5900f45d1000cf542c50ff70 Problem 241: Perfection Quotients 5 301888 problem-241-perfection-quotients

--description--

For a positive integer n, let σ(n) be the sum of all divisors of n, so e.g. σ(6) = 1 + 2 + 3 + 6 = 12.

A perfect number, as you probably know, is a number with σ(n) = 2n.

Let us define the perfection quotient of a positive integer as p(n) = \frac{σ(n)}{n}.

Find the sum of all positive integers n ≤ {10}^{18} for which p(n) has the form k + \frac{1}{2}, where k is an integer.

--hints--

perfectionQuotients() should return 482316491800641150.

assert.strictEqual(perfectionQuotients(), 482316491800641150);

--seed--

--seed-contents--

function perfectionQuotients() {

  return true;
}

perfectionQuotients();

--solutions--

// solution required