Factors Sum
Basic Accuracy: 19.99% Submissions: 55 Points: 1

Given a number N, find the sum of all its factors.


Example 1:

Input: N = 30
Output: 72
Explanation: Factors sum 1 + 2 + 3 + 5 
+ 6 + 10 + 15 + 30 = 72


Example 2:

Input: N = 15
Output: 24
Explanation: Factors sum 1 + 3 + 5 
+ 15 = 24


Your Task:  
You don't need to read input or print anything. Your task is to complete the function factorSum() which takes N as input and returns the sum.

Expected Time Complexity: O(sqrt N)
Expected Auxiliary Space: O(1)


Constraints:
1 ≤ ≤ 109

to report an issue on this page.

Editorial

We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?

Yes

All Submissions

My Submissions:

Login to access your submissions.