1 and 3
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The factors of 27 from 1-30 are: 1, 3, 9, 27.
The only factor 22 and 27 have in common is 1.
25, 27, and 45 share no common factors aside from 1.
The common factors of 30 and 32 are: 1 and 2
23 and 30 share no common factors aside from 1.