They are:16 = 1 x 1616 = 2 x 816 = 4 x 4
The factor pairs of 51 are: 1 x 51 3 x 17
Aside from itself (21), the highest integer factor of 21 is 7.
(1,42) (2,21) (3,14) (6,7)
The only common factor of all three numbers is 3. (The numbers 21 and 63 share all of the factors of 21 : 1, 3, 7, and 21.)
(1, 21)(3, 7)
How about: 14 and 21
3
They are:16 = 1 x 1616 = 2 x 816 = 4 x 4
1 and 567 are a factor pair of 567 since 1 x 567= 567 3 and 189 are a factor pair of 567 since 3 x 189= 567 7 and 81 are a factor pair of 567 since 7 x 81= 567 9 and 63 are a factor pair of 567 since 9 x 63= 567 21 and 27 are a factor pair of 567 since 21 x 27= 567
1 and 105 are a factor pair of 105 since 1 x 105= 105 3 and 35 are a factor pair of 105 since 3 x 35= 105 5 and 21 are a factor pair of 105 since 5 x 21= 105 7 and 15 are a factor pair of 105 since 7 x 15= 105
Every number has a factor pair of 1 and itself. Prime numbers have that as their only factor pair. Composite numbers have additional factor pairs. 7 = 1 x 7 9 = 1 x 9 16 = 1 x 16 and others 21 = 1 x 21 and others
7
The GCF is 3.
The factor pairs for 21 are1 x 21 and 3 x 7
The factor pairs of 51 are: 1 x 51 3 x 17
24 and 49 are relatively prime. Their only common factor is 1. All the other pairs have more than the number 1 as a common factor.