Answer :
Step-by-step explanation:
1, 19 and 1, 2, 19, 38 respectively.
I think this is ur answer.....!
Factors of 19 = 1, 19
Factors of 38 = 1, 2, 19, 38
Common factors = 1, 19
Factors of 38 = 1, 2, 19, 38
Common factors = 1, 19