56.
4= 4,8,12,16,20,24,28,32,36,40, 44, 48 etc.8= 8,16,24,32,40,48,56,64,72,80,88,96, etc.
4.28.1
Multiples of 8 are the product of any integer when multiplied by 8. Examples would be 8, 16, 24, 32, etc...
There are an infinite number of multiples of 3 and 8. The Lowest Common Multiple (LCM) of 3 and 8 is 24. Any multiple of 24 will also be a common multiple of 3 and 8.