1)-1,3
(total number:2)
The factors of 23 are 1 and 23.
Since 23 is a prime number, therefore, it has only two factors.
2)-1,7,49
(3)
The factors of 49 are 1, 7 and 49.
3)-1,3,19,57
(4)
The factors of 57 are 1, 3, 19, and 57.
4)-1,79
(2)
The factors of 79 are 1 and 79
5)-1,3,9,27,81
(5)
6 is not a factor of 81 since the factors of 81 are 1, 3, 9, 27, and 81.
pa brainliest hihi thanks
