28
Since 18 is a factor of 108, all of its factors are common, i.e. 1,2,3,6, 9 and 18.
Since 54 is a factor of 108, all of 54's factors are common and the GCF is 54 itself.
Since 36 is a factor of 108, all of its factors are common.
All the factors of 108 are 1,2,3,4,6,9,12,18,27,36,54,108
156
Since 54 is a factor of 108, all of its factors are common.
The factors of 84 are:1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84The factors of 108 are:1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108The common factors are:1, 2, 3, 4, 6, 12
The GCF of 36 and 108 is 36.One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.The factors of 108 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, and 108.The common factors are 1, 2, 3, 4, 6, 9, 12, 18, and 36. Therefore, the greatest common factor is 36.
This one's a little confusing, but 54, 18, 6 and 2 are all factors of 108 that when added total 80.
There cannot be a greatest common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.
There is neither a greatest common factor nor common factors of a single number, such as 108, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor.
The GCF of 84 and 108 is 12. One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The factors of 108 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, and 108. The common factors are 1, 2, 3, 4, 6, and 12. Therefore, the greatest common factor is 12. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 84 are 2, 2, 3, and 7. The prime factors of 108 are 2, 2, 3, 3, and 3. The prime factors in common are 2, 2 and 3, so the greatest common factor is 2 x 2 x 3 = 12.