If a number can be represented by an all-red train, an all-green train, and an all-black train, it means that the number is divisible by three colors, i.e., it has at least three factors. However, the claim that it has at least eight factors is incorrect. The factors of a number are the numbers that divide it evenly without leaving a remainder. To find the factors, we need the actual number and not just the colors of trains.
