Besides 1 and itself (18) it has 4: 2,3,6,9.
Six factors.
The factors of 18 are 1,2,3,6,9 and 18. For them to be common, they need to be compared to another set of factors.
Factors of 18: 1,2,3,6,9,18 Factors of 42: 1,2,3,6,7,14,21,42 Factors of both: 1,2,3,6
The factors of 18 are 1,2,3,6,9 and 18. For them to be common, they need to be compared to another set of factors.
The factors of 18 are 1, 2, 3, 6, 9, and 18. The prime factors are 2 x 3 x 3. 18 is a composite number.
18 has 6 factors.
Six factors.
18 has six factors: 1, 2, 3, 6, 9, 18
1,2,3,6,9,18 Six factors.
6
These three: 2, 6, 18
Six of them.
18
18 and all factors of 18. 18 and all factors of 18. 18 and all factors of 18. 18 and all factors of 18.
1, 2, 3, 6, 9, 18.
They are: 1*18 = 18, 2*9 = 18 and 3*6 = 18
The factors of 18 are 1,2,3,6,9, and 18. The factors of 81 are 1,3,9,27, and 81.