All possible factors of the smallest 3-digit number are _____.

The smallest three-digit number is 100.

A number can be expressed as the product of 2 numbers for example, 100 can be expressed as:

100 = 1 x 100

100 = 2 x 50

100 = 4 x 25

100 = 5 x 20

100 = 10 x 10

The above numbers are nothing but the factors of 100.

Therefore, the factors of 100 are 1,2,4,5,10,20,25,50 and 100.