freeCodeCamp/problem-379-least-common-multiple-count.english.md at 92377cf71af628cb5ea6b28ff7d6fa66a9b52449

mrugesh 22afc2a0ca feat(learn): python certification projects (#38216 )

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Kristofer Koishigawa <scissorsneedfoodtoo@gmail.com>
Co-authored-by: Beau Carnes <beaucarnes@gmail.com>

2020-05-27 13:19:08 +05:30

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id, challengeType, isHidden, title, forumTopicId

id	challengeType	isHidden	title	forumTopicId
5900f4e81000cf542c50fffa	5	false	Problem 379: Least common multiple count	302041

Description

Let f(n) be the number of couples (x,y) with x and y positive integers, x ≤ y and the least common multiple of x and y equal to n.

Let g be the summatory function of f, i.e.: g(n) = ∑ f(i) for 1 ≤ i ≤ n.

You are given that g(106) = 37429395.

Find g(1012).

Instructions

Tests

tests:
  - text: <code>euler379()</code> should return 132314136838185.
    testString: assert.strictEqual(euler379(), 132314136838185);

Challenge Seed

function euler379() {
  // Good luck!
  return true;
}

euler379();

Solution

// solution required

966 B Raw Blame History