#### Answer

1, 2, 3, 6, 7, 14, 21, 42

#### Work Step by Step

42 = 1 * 42, 2 * 21, 3 * 14, and 6 * 7, so the factors are 1, 2, 3, 6, 7, 14, 21, and 42.
Here’s a great way to find factors:
1) pick a factor pair that you already know - eg. 1*42
2 multiply one member of the pair by a number, and divide the other member of the pair by the same number - eg. 1*3=3 and 42/3=14
3)these new numbers are another factor pair - ie. our new one here is 3*14