Find the factors of 42 showing explain your work and this is the factor pairs in a table

Fundamental Theorem of Arithmetic states that every positive integer can be factor into a product of unique primes.
42=2*3*7
therefore all factors of 42 are all the combinations of the product
2, 3, 7, 6, 14, 21
and 1,42 in case you wanted to include them as well.