1 + 60 + 2 + 30 + 3 + 20 + 4 + 15 + 5 + 12 + 6 + 10 = 168
The sum is 144 if 60 is included, 84 if not.
28
60
60
1 + 3 + 5 + 15 = 24
All of the [positive] whole-number factors of 24 are: 1, 2, 3, 4, 6, 8, 12, and 24. Their sum is 60.
36 and 24
1 and 2.
2, 4, 6, 10, 12, 20, 30, 60 add up to 144.
60 is a composite number. 60 has integer factors other than itself and 1.
1 + 2 + 3 + 4 + 5 + 6 + 10 + 12 + 15 + 20 + 30 + 60 = 168
2 and 1/2 and 2 and 4/5, respectively.