Description
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
Solution
Python3
class Solution:
def commonFactors(self, a: int, b: int) -> int:
res = 0
for x in range(1, min(a, b) + 1):
if a % x == 0 and b % x == 0:
res += 1
return res