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freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-429-sum-of-squares-of-unitary-divisors.chinese.md
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id, challengeType, title, videoUrl, localeTitle
id challengeType title videoUrl localeTitle
5900f5191000cf542c51002c 5 Problem 429: Sum of squares of unitary divisors 问题429单一除数的平方和

Description

数为n的unit除数d是n的除数其性质为gcddn / d= 1。 4的除数 = 24是1、3、8和24。 它们的平方和是12 + 32 + 82 + 242 = 650。

令Sn表示n的一元除数的平方和。 因此S4 650。

求S100000000取模1000000009。

Instructions

Tests

tests:
  - text: <code>euler429()</code>应该返回98792821。
    testString: assert.strictEqual(euler429(), 98792821);

Challenge Seed

function euler429() {
  // Good luck!
  return true;
}

euler429();

Solution

// solution required

/section>