Examples

18

$18$

Step 1

The factors for

18

$18$ are all numbers between

- 18

$- 18$ and

18

$18$ , which divide

18

$18$ evenly.

Check numbers between

- 18

$- 18$ and

18

$18$

Step 2

Find the factor pairs of

18

$18$ where

x \cdot y = 18

$x \cdot y = 18$ .

\begin{matrix} x & y 1 & 18 2 & 9 3 & 6 - 1 & - 18 - 2 & - 9 - 3 & - 6 \end{matrix}

$\begin{array}{c} x & y \\ 1 & 18 \\ 2 & 9 \\ 3 & 6 \\ - 1 & - 18 \\ - 2 & - 9 \\ - 3 & - 6 \end{array}$

Step 3

List the factors for

18

$18$ .

- 18, - 9, - 6, - 3, - 2, - 1, 1, 2, 3, 6, 9, 18

$- 18, - 9, - 6, - 3, - 2, - 1, 1, 2, 3, 6, 9, 18$

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