20,6
3 and 10 are the friendly parts of 30
the friendly parts for 64 is the multiples of 2,and 4
it is 44
0.0055
30 and 27
five
30 and 21
doing
Friendly parts? All I can say is that 57 = 3x19. 3 and 19 are prime numbers, and this is the only way to get 57 by multiplying.
8 and 6
42+42
46 and 67