Divide by 2 until you get to 5.
1, 2, 4, 5, 8, 10, 20, 40
Explaining how to find all factors pairs of 40 is easy. All you have to do is find which whole numbers 40 can be divided into.
The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40
all the factors of 40 are 1, 2, 4, 5, 8, 10, 20, 40
The factors of 40 are 1,2,4,5,8,10,20 and 40. For them to be common, they need to be compared to another set of factors.
Divide 40 by 1, 2, 4 and 5. 1, 2, 4, 5, 8, 10, 20, 40
Divide 40 by 1, 2, 4 and 5. 1, 2, 4, 5, 8, 10, 20, 40
The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40.
The product of all of the factors of 40 is (1, 2, 4, 5, 8, 10, 20, 40) : 2,560,000
Since 20 is a factor of 40, all of its factors are common.
Since 40 is a factor of 120, all of its factors are common.
One way to determine the common factors is to find all the factors of the numbers and compare them. The factors of 15 are 1, 3, 5, and 15. The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40. The common factors are 1 and 5. The greatest common factor is 5.
The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40