For 30 they are:
1, 2, 3, 5, 6, 10, 15, & 30
For 36 they are:
1, 2, 3, 4, 6, 9, 12, 18, & 36
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1,2,3,6
No, 30 and 36 are not relatively prime. They share the factors 3 and 6.
Common factors of 30 and 36 are: 1, 2, 3, and 6.
The factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18, 36. Thus the multiples of 2 which are not factors of 36 are: 8, 10, 14, 16, 20, 22, 24, 26, 28, 30, 32, 34, 38, 40, 42, ... (all multiples of 2 greater than 36 are not factors of 36).
Since 12 is a factor of 36, all of the factors of 12 are common to 36.