The greatest common factor of 18 and 21 is 3.
The Greatest Common Factor of 9, 18, 21: 3
The factors of 18 are 1, 2, 3, 6, 9, and 18. The factors of 21 are 1, 3, 7, and 21. The common factors are 1 and 3. Therefore, the least common factor (the smallest common factor) is 1. Factorizations: 18-3x3x2 21-7x3
The highest common factor of 21 and 18 is 3
The GCF of 3, 21, and 18 is 3.
The GCF of 18, 21, and 54 is 3.
1 and 3
It is: 3
You need at least two numbers to find a GCF.
The least common factor of any set of integers is 1.
The GCF is 3.
The least common factor of any set of integers is 1.