1 x 150, 2 x 75, 3 x 50, 5 x 30, 6 x 25, 10 x 15.
When the "factors" of a number are listed, the list is usually restricted to positive factors. Then there would be no answer to the question, because no group of positive numbers can add up to make zero.
715
Pairs of numbers whose sum is -14 and that are factors of -189 include -7 and -7, and -21 and 7.
527
SPEED and 5 dolls.