113
The factors of 21 that add up to 8 are 1 and 7.
factors of 30 that add to 17 are 2 and 15
19 and 19
There aren't any. All multiples of 24 are greater than 19. If you mean factors, you can use 12, 6 and 1 or 8, 6, 3, 2.
47
146
-1, 6 and -12.
91
Since 19 is a prime number, it only has two factors - 1 and 19.
139
-10 and 2 -12 and 4 -20 and 12
-19
113
The factors of 64 are 1, 2, 4, 8, 16, 32 and 64. No two of them add up to 19.
134
To find factors that add up to 240 and also add up to 140, we need to solve a system of equations. Let's represent the two factors as x and y. We have the equations x + y = 140 and x + y = 240. By solving this system, we find that the factors are 100 and 140.