2310
36
44
It is a composite number whose factors are: 1, 5, 41 and 205
Pairs of numbers whose sum is -14 and that are factors of -189 include -7 and -7, and -21 and 7.
165
The smallest positive integer is 3.
72
30
165
44
2310
36
How about 6 whose factors are 1, 2, 3 and 6
It is 11 which is a prime number whose factors are itself and one
36
Well, honey, the smallest number with prime factors 3, 5, 7, and 11 is simply the product of these primes: 3 * 5 * 7 * 11 = 1155. So, there you have it, darling, 1155 is the smallest number you're looking for.