The common factors are: 1, 2, 4
The common factors of 12, 20 and 36 are: 1, 2, and 4
The common factors of 8, 20, and 36 are: 1, 2, and 4
The common factors of 20, 28, and 36 are 1, 2 and 4
The common factors of 20, 36, and 48 are 1, 2 and 4
The common factors of 21 and 36 are 1 and 3
The Greatest Common Factor (GCF) of 20 and 36 is: 4
The common factors of 18 and 36 are 18,9,6,3,2,1.
Since 12 is a factor of 36, all of the factors of 12 are common to 36.
Since 9 is a factor of 36, all of its factors are common.
Since 18 is a factor of 36, all the factors of 18 will be common to 36. 1,2,3,6,9,18
-- The factors of 20 are 1, 2, 4, 5, 10, and 20. -- The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. -- The (common) factors of both 20 and 36 are 1, 2, and 4 . -- The greatest one of the common factors (GCF) of 20 and 36 is 4 . The answer has got to be somewhere in here.
Common factors of 36 and 40 are: 1, 2, and 4.