![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Greatest common factor (GCF) is a factor that is greatest among the
\common factors of the numbers.
\List the factors of each number.
\Factors of 16: 2, 4, 8, 16
\Factors of 32: 2, 4, 8, 16, 32
\Factors of 40: 2, 4, 5, 8, 10, 20, 40
\Identify the greatest common factor.
\The greatest common factor of 16, 32 and 40 is 8.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The greatest common factor of 16, 32, and 40 is 8.