15 and 30 have those factors.
Factors.
Only common is one only
a prime number
16
Yes
The prime numbers: 2, 3, 5, 7, 11, 13, 17 and 19.
They are 1 and itself 280
the factors of 22 are --- 1 and 22... 2 and 11 the factors of 8 are --- 1and 8... 2 and 4 the common factors are 2
3/2
1.5. ._o
3