Create a function that finds each factor of a given number n. Your solution should return a list of the number(s) that meet this criteria.
find_factors(9) ➞ [1, 3, 9]
# 9 has three factors 1, 3 and 9
find_factors(12) ➞ [1, 2, 3, 4, 6, 12]
find_factors(20) ➞ [1, 2, 4, 5, 10, 20]
find_factors(0) ➞ []
# 0 has no factors
Return an empty list if the given number is less than 1.