LeetCode | Sum of Numbers With Exactly Four Divisors | JavaScript Solution

Learn how to solve LeetCode 1390 - Sum of Numbers With Exactly Four Divisors using JavaScript.

Problem Overview:

Given an array nums, find numbers that have exactly 4 divisors.

Sum all the divisors of such numbers and return the total.

Example:

Input: nums = [21,4,7] Output: 32 Explanation: 21 has divisors [1,3,7,21], sum = 32

Key Concepts:

Looping up to sqrt(num) for divisor calculation

Early stopping for efficiency

Array manipulation and reduction

Constraints:
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