What are the factors of 3 and 9 and 18?

Oh, what a lovely question! When we talk about factors, we're looking at the numbers that can be multiplied together to give us a certain number. For 3, the factors are 1 and 3. For 9, the factors are 1, 3, and 9. And for 18, the factors are 1, 2, 3, 6, 9, and 18. It's like a little math puzzle waiting to be solved!