1 + 2 + 3 + 5 + 6 + 10 + 15 + 30 = 62.
The sum of the positive whole-number factors of 30 is 72.
The sum of all the positive factors of 12 is 28.
105 is the sum
-5 and -6
32
The sum of the positive whole-number factors of 30 is 72.
5 and 6 are factors of 30 that, when added together, provide a sum of 11.
26
26
The prime factors of 30 are: 2 + 3 + 5 = 10
20 and 30.
The factors of 29 are 1 and 29. Their sum is 30.
The sum of all the positive factors of 12 is 28.
There aren't any numbers like that. You might be thinking of 28, which has a sum of all its factors equal to twice itself, making it a perfect number. Proper factors are a different set.
5 and 6
Add them up. The prime factors of 30 are 2, 3 and 5. You can handle the rest.
532