Any of its factors including itself
1, 2, 4, 5, 10, and 20 divide evenly into 20.
5 & 17
1 and 13
1 2 7 14 49 and 98 all divide into 98 evenly.
A factor can divide into its multiple evenly.
2 and 60 will divide evenly into 120.
Any of its factors including itself
1, 2, 4, 8, 16, 29, 58, 116, 232, 464, 841, 1682, 3364, 6728, 13456.
These are the numbers that divide into 28 evenly: 1, 2, 4, 7, 14, 28.
1, 2, 4, 5, 10, and 20 divide evenly into 20.
They are called factors or divisors.
divisors
The greatest common factor of these numbers is 1. If it were a composite number, we could say that that number, and all the numbers that divide it evenly, divide these numbers evenly. However, these numbers are relatively prime-that is, the only factor they share is 1.
Any of its factors
5 & 17
1 and 13