268
To find factors of 28 that add up to 18, we first list the factors of 28: 1, 2, 4, 7, 14, and 28. We then check pairs of these factors to see which add up to 18. The only pair that meets this criterion is 14 and 4, since 14 + 4 = 18. Thus, the factors of 28 that add up to 18 are 14 and 4.
23
The distinct prime factors of 550 are 2, 5 and 11. They add up to 18.
6, 12 and 18
It wasn't me, but I would have come up with 33. The four factors of 33 add up to 48.
To find factors of 28 that add up to 18, we first list the factors of 28: 1, 2, 4, 7, 14, and 28. We then check pairs of these factors to see which add up to 18. The only pair that meets this criterion is 14 and 4, since 14 + 4 = 18. Thus, the factors of 28 that add up to 18 are 14 and 4.
23
The two square numbers that add up to 225 are 144+81 = 225
-10 & -18
360
91
-273
27
23
46
The distinct prime factors of 550 are 2, 5 and 11. They add up to 18.
Well, 18 and 3 (both factors of 36) add up to 21. As well, the factors 12 and 9 add up to 21.