No, 2 is not a factor of odd numbers, like 19.
The GCF is 1.
Since the numerator of the fraction is prime, and is not a factor of the denominator, the proper fraction 19/36 cannot be simplified any further.
The GCF is 1.
It can be either or both. 36 is a factor of 72. 36 is a multiple of 9. 36 is both a factor and a multiple of 36.
36 is the largest factor of 36,
36 is the highest factor of 36.
4 is a factor of 36 and 36 is a multiple of 4
10 is not a factor of 36.
No, but 4 is a factor of 36.
16 is not a factor of 36.
-36