Four of them.
66
The factor pairs of 66 are:66,133,222,311,6(1, 66)(2, 33)(3, 22)(6, 11)
(66, 1) (33, 2) (22, 3) (11, 6)
-4^1389 + 66=+67^7890
66 = 1 x 66 66 = 2 x 33 66 = 3 x 22 66 = 6 x 11
The factor pairs of 132 are: (1, 132), (2, 66), (3, 44), (4, 33), (6, 22), and (11, 12).
Six is a factor of 66.
1 x 66, 2 x 33, 3 x 22, 6 x 11, 11 x 6, 22 x 3, 33 x 2, 66 x 1
The greatest common factor of 66 , 132 = 66
66
1 x 66, 2 x 33, 3 x 22, 6 x 11, 11 x 6, 22 x 3, 33 x 2, 66 x 1
There are 6 factor pairs of 726: 726 = 1 x 726 726 = 2 x 363 726 = 3 x 242 726 = 6 x 121 726 = 11 x 66 726 = 22 x 33