The common factors are: 1, 5.
The common factors of 35 and 45 are: 1 and 5
The common factors of 24 and 45 are: 1 and 31 and 3
The common factors of 200 and 205 are: 1 and 5
81 and 200 have no common prime factors.
The factors of 45 are 1, 3, 5, 9, 15, 45. For them to be common, they need to be compared to another set of factors.
The common factors of 45 and 54 are: 1, 3, and 9
Since 45 is a factor of 90, all of its factors are common.
The common factors of 45 and 63 are 1, 3, and 9.
The common factors of 18 and 45 are 1, 3 and 9.
The common factors of 45 and 108 are: 1, 3 & 9.
Common factors of 45 and 999 are: 1, 3, and 9.
Since 45 is a factor of 900, all of its factors are common.