Watch 10 video solutions for Number of Common Factors, a easy level problem involving Math, Enumeration, Number Theory. This walkthrough by NeetCodeIO has 76,336 views views. Want to try solving it yourself? Practice on FleetCode or read the detailed text solution.
Given two positive integers a and b, return the number of common factors of a and b.
An integer x is a common factor of a and b if x divides both a and b.
Example 1:
Input: a = 12, b = 6 Output: 4 Explanation: The common factors of 12 and 6 are 1, 2, 3, 6.
Example 2:
Input: a = 25, b = 30 Output: 2 Explanation: The common factors of 25 and 30 are 1, 5.
Constraints:
1 <= a, b <= 1000