Short answer: There are none.
There is neither a greatest common factor nor common factors of a single number, such as 432, 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.
Examples:
The common factors of 8 and 432 are 1, 2, 4, and 8; the greatest common factor is 8.
The common factors of 19 and 432 are 1; the greatest common factor is 1.
The common factors of 100 and 432 are 1, 2, and 4; the greatest common factor is 4.
The GCF is 8.
The GCF is 8.
The Greatest Common Factor (GCF) is: 18
16 is the greatest common factor between 128 and 432.
Since 108 is a factor of 432, it is automatically the GCF.
The GCF is 1.
432
The GCF is 16.
72 and 432, respectively.
The GCF is 72. The LCM is 432.
The Greatest Common Divisor of 432, 360 is 72.
There cannot be a greatest common factor if there are not at least two numbers to compare. The greatest common factor is the largest factor that all the numbers have in common - the largest factor that they all share. Here are some sets of numbers with the greatest common factor of 54: 54, 108 108, 162 54, 162, 540 432, 378