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Count number of factors of a number - JavaScript
We are required to write a JavaScript function that takes in a number and returns the count of numbers that exactly divides the input number.
For example −
If the number is 12, then its factors are −
1, 2, 3, 4, 6, 12
Therefore, the output should be 6.
Example
Following is the code −
const num = 12;
const countFactors = num => {
let count = 0;
let flag = 2;
while(flag <= num / 2){
if(num % flag++ !== 0){
continue;
};
count++;
};
return count + 2;
};
console.log(countFactors(num));
console.log(countFactors(2));
console.log(countFactors(454));
console.log(countFactors(99));Output
Following is the output in the console −
6 2 4 6
Updated on: 15-Sep-2020
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