The least common factor of any set of integers is 1.
The least common factor - the smallest number which divides them all - is 1.
30
The least common factor of any pair of numbers, including 10 and 12, is 1. The factors of 10 are 1, 2, 5, and 10. The factors of 12 are 1, 2, 3, 4, 6, and 12. The common factors of 10 and 12 are 1 and 2. Therefore, the least common factor (the smallest common factor) is 1.
The highest common factor of two numbers is always equal to the smallest number if that number is a factor of the larger number. This is the case here. Since 6 is a factor of 36, 6 is the highest common factor of 6 and 36.
The GCF is 2.
The factors of 54 are 1, 2, 3, 6, 9, 18, 27, and 54. The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, and 90. The common factors are 1, 2, 3, 6, 9, and 18. The least (smallest) common factor is 1. The smallest common prime factor is 2.
10
The least common factor is: 1
30
6
The lowest common FACTOR of any set of numbers is 1. Perhaps you meant the Lowest Common MULTIPLE, which for 6, 10, 15 is 30. Or you meant the HIGHEST Common Factor, which for 6, 10, 15 is 1.
The greatest common factor of 4, 6, 10, and 22 is 2.