JavaScript: Compute the factors of a positive integer

JavaScript Function: Exercise-13 with Solution

Write a JavaScript function to compute the factors of a positive integer.

Sample Solution: -

HTML Code:

<!DOCTYPE html>
<meta charset=utf-8 />
<title>Compute the factors of a positive integer</title>

JavaScript Code:

function factors(n)
 var num_factors = [], i;
 for (i = 1; i <= Math.floor(Math.sqrt(n)); i += 1)
  if (n % i === 0)
   if (n / i !== i)
    num_factors.push(n / i);
 num_factors.sort(function(x, y)
     return x - y;});  // numeric sort
     return num_factors;
console.log(factors(15));  // [1,3,5,15] 
console.log(factors(16));  // [1,2,4,8,16] 
console.log(factors(17));  // [1,17]

Sample Output:



Flowchart: JavaScript function: Compute the factors of a positive integer

Live Demo:

See the Pen JavaScript - Compute the factors of a positive integers-function-ex- 13 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript function which says whether a number is perfect.
Next: Write a JavaScript function to convert an amount to coins.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

JavaScript: Tips of the Day

How to check whether a string contains a substring in JavaScript?

ECMAScript 6 introduced String.prototype.includes:

const string = "foo";
const substring = "oo";


includes doesn't have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found:

var string = "foo";
var substring = "oo";

console.log(string.indexOf(substring) !== -1);

Ref: https://bit.ly/3fFFgZv