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

1,2,3,6,7,14,21, and42

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.