Two of them.
1 and 23.
1 and 23.
5 and 23 are coprime so the answer is 1.
The numbers are different primes, so the answer is 1.
They are: 3 and 23
1
1 3 23 69.
1, 19, 23, 437.
1, 5, 23, 115, -1, -5, -23, -115
216 = 23 x 33
The only common factor is one.