Answer:
12 and 18 are two number less than 20 with most factor.
Explanation:
We need to find a number less than 20 with most factor.
Factor: Split a number into small number with their multiple.
So, we find the factor of all the number less than 20.
1 = 1
2 = 2 x 1
3= 3 x 1
4= 1 x 2 x 4
5= 1 x 5
6=1 x 2 x 3 x 6
7=1 x 7
8=1 x 2 x 4 x 8
9=1 x 3 x 9
10=1 x 2 x 5 x 10
11=1 x 11
12=1 x 2 x 3 x 4 x 6 x 12
13=1 x 13
14=1 x 2 x 7 x 14
15=1 x 3 x 5 x 15
16=1 x 2 x 4 x 8 x 16
17=1 x 17
18=1 x 2 x 3 x 6 x 9 x 18
19=1 x 19
We can factors of 12 and 18 are 6.
Thus, 12 and 18 are two number less than 20 with most factor.