There are only four factors ! They are 1,2,13 & 26
26, 36, 39, 52 and 78 are all factors of 468.
81 only has five factors.
26, 52, 78, 104, 130
Nine has three factors.
They are the first 26 numbers, starting with 2, such that their only factors are 1 and the numbers themselves.
One and two
The first five multiples of 13: 13, 26, 39, 52, 65
59 is a prime number and therefore does not have any factors.
The factors of 26 are 1, 2, 13, and 26.
There are 26 possibilities.
The factors of 81 are 1, 3, 9, 27, and 81
The factors of 26 are 1, 2, 13, and 26.