2018-09-30 22:01:58 +00:00
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---
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id: 5900f43f1000cf542c50ff52
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challengeType: 5
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title: 'Problem 211: Divisor Square Sum'
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---
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## Description
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<section id='description'>
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For a positive integer n, let σ2(n) be the sum of the squares of its divisors. For example,
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σ2(10) = 1 + 4 + 25 + 100 = 130.
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Find the sum of all n, 0 < n < 64,000,000 such that σ2(n) is a perfect square.
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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2018-10-04 13:37:37 +00:00
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tests:
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- text: <code>euler211()</code> should return 1922364685.
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2018-10-20 18:02:47 +00:00
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testString: assert.strictEqual(euler211(), 1922364685, '<code>euler211()</code> should return 1922364685.');
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2018-09-30 22:01:58 +00:00
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function euler211() {
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// Good luck!
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return true;
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}
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euler211();
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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