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freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-221-alexandrian-integers.md

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---
id: 5900f4491000cf542c50ff5c
challengeType: 5
videoUrl: ''
2020-10-01 17:54:21 +02:00
title: 问题221亚历山大整数
---
## Description
<section id="description">如果存在整数pqr我们将调用正整数A和“亚历山大整数”这样 <pre> <code> A = p · q · r and 1A</code> </pre><p> = </p><pre> <code> 1p</code> </pre><p> + </p><pre> <code> 1q</code> </pre><p> + </p><pre> <code> 1r</code> </pre><p>例如630是亚历山大整数p = 5q = -7r = -18。实际上630是第6个亚历山大整数前6个亚历山大整数是6,42,120,156,420和630。 </p><p>找到第150000个亚历山大整数。 </p></section>
## Instructions
<section id="instructions">
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler221()</code>应该返回1884161251122450。
testString: assert.strictEqual(euler221(), 1884161251122450);
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler221() {
// Good luck!
return true;
}
euler221();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
/section>