Just 1.
Common factors have to go into both numbers. The only common factor of 20 and 27 is 1.
To find the greatest common factor of two numbers, you first need to split them into their prime factors. In this case, 20 and 27 can be broken down as follows: 20 = 2x2x5 27 = 3x3x3 The next step would be to identify any common factors. In this case there are none. Thus the greatest common factor of 20 and 27 is 1.
What are the common factors for 14 and 22
The common factors of 27 and 36 are 1, 3 and 9.
The factors of 27 are 1, 3, 9, 27 For them to be common, they need to be compared to another set of factors.
The common factors are: 1, 3, 9, 27
1 & 3 are the common factors of 27 and 33.
The common factors of 27 and 93 are: 1 and 3
The common factors of 27 and 57 are 1 and 3
The common factors of 27 and 96 are 1 and 3
The common factors of 27 and 39 are 1 and 3
Common factors of 87 and 27 are: 1 and 3.