The number in question is 4*20 = 80.
The factors of 80 are:
1, 2, 4, 5, 8, 10, 16, 20, 40 and 80
A factor of a number is an integer that divides the number completely without leaving a remainder. To find the factors of 80, we can start with 1 and divide 80 by each number up to 80. Any number that divides 80 without leaving a remainder is a factor of 80.
1, 2, 4, 5, 8, 10, 16, 20, 40 and 80 are the factors of 80.