Answer
1, 2, 4, 5, 8, 10, 20, and 40
Work Step by Step
The factors for the number 40 are 1, 2, 4, 5, 8, 10, 20, and 40.
$1\times40=40$
$2\times20=40$
$4\times10=40$
$5\times8=40$
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