Answer
Factors: $1, 2, 3, 6, 7, 14, 21$ and $42$
Work Step by Step
Start with the number $1$.
Divide $42$ by $1$. The result is $42$.
$42=1\cdot42$
$1$ and $42$ are factors of $42$.
Divide $42$ by $2$. The result is $21$.
$42=2\cdot 21$
$2$ and $21$ are factors of $42$.
Divide $42$ by $3$. The result is $14$.
$42=3\cdot14$
$3$ and $14$ are additional factors of $42$.
Divide $42$ by $4$. The result is $10.5$ (not a whole number). $4$ does not divide evenly into $42$.
Divide $42$ by $5$. The result is $8.4$ (not a whole number).
$5$ does not divide evenly into $42$.
Divide $42$ by $6$. The result is $7$.
$42=6\cdot 7$
$6$ and $7$ are more factors of $42$.
Thus, the factors of $42$ are $1, 2, 3, 6, 7, 14, 21$ and $42$.