23
23
The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36 No two of them add up to 23.
Factors multiply. The same set of numbers won't add up to both 140 and 240, but 120 and 20 are factors of 240 that total 140.
The four factors of 33 add up to 48.
6323
23
23
23
The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36 No two of them add up to 23.
23
23/2 + (square root of 673) / 2, and 23/2 - (square root of 673) / 2.
The factors of 21 that add up to 8 are 1 and 7.
None. Factors don't add, they multiply.
The factors of 8 are 1, 2, 4, and 8. The factors that add up to 10 are 2 and 8.
Factors multiply. The same set of numbers won't add up to both 140 and 240, but 120 and 20 are factors of 240 that total 140.
It wasn't me, but I would have come up with 33. The four factors of 33 add up to 48.