The factors of 32 are:
1, 2, 4, 8, 16, 32
The factors of 80 are:
1, 2, 4, 5, 8, 10, 16, 20, 40, 80
The common factors are:
1, 2, 4, 8, 16
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They are even
No
1,2,4,8,16,32
Since they can both be evenly divided by factors other than themselves and 1, they are both composite numbers.
1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640