Yes
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99 . . .
-27
1 2 3 5 6 9 10 15 18 30 45
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.
Anything that isn't 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99 and so on.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99
1, 3, 5, 9, 15, 45 are the factors of 45.
63
5 & 9. 5 + 9 = 14... 5 x 9 = 45.
-41
45 = 1 x 45, 3 x 15, 5 x 9
9, 18 and 36