Factors of 81 in pairs = 1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1.
Since 81 is not divisible by 7 therefore, 7 is not a factor of 81.
Nine is the highest common factor of 81 and 9
No, 18 is not a factor of 81.
The GCF of 53 and 81 is 1.
81 has three factor pairs: 81,1 27,3 9,9
81,127,39,9
1,81,3,27,9
81 and 1 27 and 3
(81,1)(27,3)(9,9)
(81,1)(27,3)(9,9)
(1, 81) (3, 27) (9, 9)
There are 5 factor pairs of 6,561.6561 = 1 x 65616561 = 3 x 21876561 = 9 x 7296561 = 27 x 2436561 = 81 x 81
There are 3 pairs in total 1) 1 and 81 2) 3 and 27 3) 9 and 9
There are 3. 1 x 81, 3 x 27, 9 x 9
Yes, a prime number, P, has only two factor pairs: (1, P) and (P, 1) so immediately after 1, they reverse order.
There is no order to factor pairs: you can present them in any order that you like.