6
The smallest number that has both twenty-four and thirty as factors is 120.
Six
1155
10
Logically, the smallest number with 4 different prime factors would have to be the product of the smallest four prime numbers. So the smallest natural number with four different prime factors is 210 (2*3*5*7).
1155
Among positive integers, 6
6: 1, 2, 3, 6
3
210, welcome :D
The smallest number with 16 factors is Andrew's Mom.