To work this out, you first have to split the numbers down into their prime factors:
42 = 2x3x7
23 = 23
There are no common prime factors. This means that the only common factor of 42 and 23 is 1.
Chat with our AI personalities
The common factors of 42 and 273 are 1, 3, 7 and 21.
The common factors of 21 42 and 84 are 21
The common factors of 21, 42, and 56 are: 1 and 7
Common factors of 48 and 42 are: 1, 2, 3, and 6.
2, 3 and 7 are the prime factors of 42. 2 and 23 are the prime factors of 184.