16 and 21 only have one common factor, the number one.
The factors of 16 are 1, 2, 4, 8, and 16.The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40.The common factors of 16 and 40 are 1, 2, 4, and 8.
The factors of 16 are 1, 2, 4, 8 and 16. For them to be common, they need to be compared to another set of factors.
1 2 4
First, note the factors of each number. The factors of 14 are 1, 2, 7 and 14. The factors of 16 are 1, 2, 4, 8 and 16. Common factors are any factors which are shared by the two numbers. Both numbers have 1 and 2 as factors. Thus the common factors of 14 and 16 are 1 and 2.
The common factors of 16 and 48 are 16,8,4,2,1.
16, 32, 48
The least common multiple of 16 and 8 is 16. Because 16 is a multiple of 8, it is automatically the LCM of the pair. Another approach: To find the least common multiple, factor each number to its prime factors and then multiply all the factors from the first number with any factors in the second number that are not repeated from the first number. The prime factors of 8 are 2 x 2 x 2. The prime factors of 16 are 2 x 2 x 2 x 2.
The common factors of 14 and 16 are 1 and 2.
Common factors of 10 and 16 are: 1 and 2.
The factors of 48 are 1,2,3,4,6,8,12,16,24, and 48. The factors of 16 are 1,2,4,8, and 16. The common factors of 16 and 48 are 1,2,4,8, and 16.
The factors of 6 are: 1, 2, 3, 6.The factors of 16 are: 1, 2, 4, 8, 16.The common factors are: 1, 2
The common factors of 16 and 64 are 1, 2, 4, 8, and 16.