The least common factor of any set of positive integers is 1.
The factors of 12 are 1, 2, 3, 4, 6, and 12. 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.
The common factors of 6 and 21 are 1 and 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 least common multiple of 6 , 21 = 42
The least common multiple of the numbers 21 and 6 is 42.
The factors of 18 are 1, 2, 3, 6, 9, and 18. The factors of 21 are 1, 3, 7, and 21. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The factors they have in common are 1 and 3. So, the least (or lowest) common factor is 1. Note: The least common factor of two or more positive integers will always be 1.
The factors of 6 are 1, 2, 3, and 6. The factors of 21 are 1, 3, 7, and 21. The common factors of 6 and 21 are 1 and 3, and the GCF is 3.
Least common multiple of 5 6 and 21 is 210.
6 is less than 21. Out of that set, 6 is the least number. The least common multiple of 6 and 21 is 42.
6 factors into [2 3] 21 factors into [3 7] Common factor is [3]◄
The common factors of 6, 21, and 39 are 1 and 3
The common factors of 6, 12, and 30 are 1 and 3