2018-10-10 22:03:03 +00:00
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---
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id: 5900f4e81000cf542c50fffa
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2020-12-16 07:37:30 +00:00
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title: 问题379:最少共同的多重计数
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2018-10-10 22:03:03 +00:00
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challengeType: 5
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videoUrl: ''
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---
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2020-12-16 07:37:30 +00:00
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# --description--
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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设f(n)为具有x和y正整数的耦合数(x,y),x≤y,x和y的最小公倍数等于n。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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令g为f的求和函数,即:g(n)=Σf(i),1≤i≤n。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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你得到g(106)= 37429395。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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找到g(1012)。
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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# --hints--
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2018-10-10 22:03:03 +00:00
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2020-12-16 07:37:30 +00:00
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`euler379()`应该返回132314136838185。
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2018-10-10 22:03:03 +00:00
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```js
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2020-12-16 07:37:30 +00:00
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assert.strictEqual(euler379(), 132314136838185);
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2018-10-10 22:03:03 +00:00
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```
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2020-12-16 07:37:30 +00:00
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# --solutions--
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2020-08-13 15:24:35 +00:00
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