input: Write a python function to get the factors of each number in a list and return them as a dictionary.
  assert get_factors([24, 75]) == {24: [1, 2, 3, 4, 6, 8, 12, 24], 75: [1, 3, 5, 15, 25, 75]}
  assert get_factors([15, 28]) == {15: [1, 3, 5, 15], 28: [1, 2, 4, 7, 14, 28]}
  assert get_factors([10, 20, 30]) == {10: [1, 2, 5, 10], 20: [1, 2, 4, 5, 10, 20], 30: [1, 2, 3, 5, 6, 10, 15, 30]}
output: def get_factors(numbers):
      def factors(n):
          return [i for i in range(1, n + 1) if n % i == 0]
  
      return {number: factors(number) for number in numbers}