2 and 42
8 and 36
12 and 32
16 and 28
56 and -12
48 and -4
The answer is 50 because its factors are 1,2,5,10,25,50. When you add up the sum of 50 you get 5 which is a prime number. Also it is between 44 and 53. :)
Add them up. The factors of 9 are 1, 3 and 9. The sum of the factors is 13.
The answer is 608.
15 + 15 + 5 + 5 + 3 + 1 = 44
6323
How about: 5-4 = 1
584
2024
the prime factors of 72 are 2 and 3 6,12, and 1 (also factors) sum up to 19
Add them up. 40, 42, 44, 45, 46, 48, 49, 50
Add them up. 40, 42, 44, 45, 46, 48, 49, 50
Add them up. The prime factors of 30 are 2, 3 and 5. You can handle the rest.