The greatest or highest common factor is 1
The Greatest Common Factor (GCF) of 13 and 20 is: 1
The greatest common factor of 20, 21, and 25 is 1. Although 20 and 25 can be divisible by 5, 21 can not. Therefore, the only common factor between these three numbers is 1 and it's the greatest one as well.
The GCF of 19 and 20 is 1.
The two numbers are coprime, so their greatest common factor is 1.
The greatest or highest common factor is 1
The Greatest Common Factor of 18, 13, and 20 is 1.
The Greatest Common Factor of 4, 7, 20: 1
The Greatest Common Factor (GCF) of 13 and 20 is: 1
Since 17 is a prime number, the greatest common factor of 17, 18, and 20 is 1.
1
It is: 1
1
There is neither a greatest common factor nor common factors of a single number, such as 20, 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 factors of 20 are 1, 2, 4, 5, 10, and 20. The prime factors of 20 are 2, 2, and 5. Examples: The common factors of 20 and 70 are 1, 2, 5, and 10; the greatest common factor is 10. The common factors of 20 and 32 are 1, 2, and 4; the greatest common factor is 4. The common factors of 20 and 140 are 1, 2, 4, 5, 10, and 20; the greatest common factor is 20.
The greatest common factor of 20, 8, and 5 is 1. (5 only has two factors: 1 and 5, and 5 is not a factor of 8.)
The greatest common factor of 20, 21, and 25 is 1. Although 20 and 25 can be divisible by 5, 21 can not. Therefore, the only common factor between these three numbers is 1 and it's the greatest one as well.
The GCF of 19 and 20 is 1.