---
id: 5900f3711000cf542c50fe84
challengeType: 5
title: 'Problem 5: Smallest multiple'
videoUrl: ''
localeTitle: 问题5：最小的倍数
---

## Description
<section id="description"> 2520是可以除以1到10中的每个数字而没有任何余数的最小数字。从1到<code>n</code>所有数字均可被整除的最小正数是多少？ </section>

## Instructions
<section id="instructions">
</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>smallestMult(5)</code>应该返回60。
    testString: 'assert.strictEqual(smallestMult(5), 60, "<code>smallestMult(5)</code> should return 60.");'
  - text: <code>smallestMult(7)</code>应该返回420。
    testString: 'assert.strictEqual(smallestMult(7), 420, "<code>smallestMult(7)</code> should return 420.");'
  - text: <code>smallestMult(10)</code>应返回2520。
    testString: 'assert.strictEqual(smallestMult(10), 2520, "<code>smallestMult(10)</code> should return 2520.");'
  - text: <code>smallestMult(13)</code>应返回360360。
    testString: 'assert.strictEqual(smallestMult(13), 360360, "<code>smallestMult(13)</code> should return 360360.");'
  - text: <code>smallestMult(20)</code>应该返回232792560。
    testString: 'assert.strictEqual(smallestMult(20), 232792560, "<code>smallestMult(20)</code> should return 232792560.");'

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='js-seed'>

```js
function smallestMult(n) {
  // Good luck!
  return true;
}

smallestMult(20);

```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>