144
1 and 2
No, 4 is not a factor of 18.
The first common multiple of 12 and 16 is 48.
The first common multiple is 48.
144
48
48
144
The LCM is: 144
It is: 48
144
A common multiple is a multiple that two or more given numbers have in common. 16 is not a common multiple of 7 and 8. 16 is a common multiple of 4 and 8. So, it depends on the numbers for which you are trying to find a common multiple.