Two of them.
1 and 23.
1 and 23.
Six: 1 2 4 23 46 92.
1 x 23, 23 x 1
is it really a prime #
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
They are itself and one because 23 is a prime number
1 3 23 69.
1, 19, 23, 437.