Three factor pairs
Factors of 81 in pairs = 1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1.
1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1
81, as it is the highest factor of 81 (81 and 1) and is also a factor of 162 (81 and 2)
3 is the prime factor for 81.
81 has three factor pairs: 81,1 27,3 9,9
Three factor pairs
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)
Factors of 81 in pairs = 1 x 81, 3 x 27, 9 x 9, 27 x 3, 81 x 1.
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