There is neither a greatest common factor nor common factors of a single number, such as 684, 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.
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The factors of 684 are 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, and 684. The prime factorization of 684 is 2 x 2 x 3 x 3 x 19 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684
The greatest common factor is the largest of the common factors.
There are not common factors of 14. Common factors are factors that it and another number share - factors they have in common. A single number cannot have common factors. 14 does have factors. Its factors are 1, 2, 7, and 14. 14 and 16 have common factors of 1 and 2. 14 and 21 have common factors of 1 and 7. 14 and 31 have a common factor of 1 only, which means they are relatively prime. 14 and 70 have common factors of 1, 2, 7, and 14.
There are no common factors of 77 because there cannot be common factors without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. Examples: The common factors of 14 and 77 are 1 and 7. The common factors of 66 and 77 are 1 and 11. The common factors of 77 and 154 are 1, 7, 11, and 77.
The common factors are 1.