1 and 837, 3 and 279, 9 and 93, 27 and 31
20 has 3 factor pairs. Pairs are (1,20), (2,10) and (9,9)
76 has 3 factor pairs: (1,76), (2,38), (4,19).
"Dose" is a measured portion of a medicine. I am not aware of any factor pairs related to dose 18 or any other measured quantities of medication!18 does have 3 factor pairs.
Eight of them.
Two of them.
The factor pairs of 27 are 1 x 27 and 3 x 9.
There are infinitely many pairs: the simplest pair is 1 and 270
Too many to list.
There are infinitely many pairs; an easy pair to remember is 1 and 1610.
the factor pairs are 1x35 & 5x7
There are 4 factor pairs of 24. They are:1 x 242 x 123 x 84 x 6