57 x 63 + 28 = 3619
39 more than the product of 5 and 28 is 5*28+39 = 179
20 and 30
(57 x 63) + 28 = 3619
28+10 = 38
6
No positive integer less than 19 has more factors than 28 does.
Answer41
28
28
28
28
(2n - 5)(n + 3) = 13 2n2 + n - 28 = 0 The two solutions, using the quadratic formula, are -4 and 7/2