8 and 5
-32
Add them up. The factors of 9 are 1, 3 and 9. The sum of the factors is 13.
The factors of 9 are 1, 3, and 9. 1 + 3 + 9 = 13
The factors of 21 that add up to 8 are 1 and 7.
2 3 5 7 11 13 17 19 23 29 31 and 37 are the prime numbers you can use. Possible options are: 3 + 37 = 40 11 + 29 = 40 2 + 7 + 31 = 40 3 + 7 + 13 + 17 = 40 17 + 23 = 40 3 + 7 + 13 + 17 = 40
The four factors of 33 add up to 48.
The four factors of 33 add up to 48.
-46
They are 1 and 2
The only number between 30 and 40 with distinct prime factors which add up to 12 is 35.
-32
It wasn't me, but I would have come up with 33. The four factors of 33 add up to 48.
Its factors are: 1, 3, 9, 27 and they add up to 40
487
-13
-3 and 16.
23