56 + 56 + 28 + 8 + 2 + 1 = 151
2
Add 149, 151, 163 and 167 together.
1.569
None. Factors don't add, they multiply.
39 is a composite number whose proper factors add up to 16.
The four factors of 33 add up to 48.
The four factors of 33 add up to 48.
2
There are no two real numbers that do. Using complex numbers, these two do: (-3/2 + i√151/2) & (-3/2 - i√151/2) Two numbers that add to -3 and multiply to -40 are -8 & 5 Two numbers that add to 3 and multiply to -40 are 8 & -5 Two complex numbers that add to 3 and multiply to 40 are (3/2 + i√151/2) & (3/2 - i√151/2)
The only number between 30 and 40 with distinct prime factors which add up to 12 is 35.
151 + 24 = 175
It wasn't me, but I would have come up with 33. The four factors of 33 add up to 48.
137
a + b = 645 a - b = 151 Add: 2a = 796 a= 398, making b = 247
91+31+151=273
151
Add 149, 151, 163 and 167 together.