48 is.
110
10
240 is the smallest number with at least 19 factors. 240 has twenty factors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240 262144 is the smallest number with EXACTLY 19 factors
It is 2520
11
48 is.
10 is.
48
30.
110
10
45
It is 10 whose factors are: 1, 2, 5 and 10
10, which has the factors 1,2,5 and 10. If the trivial pair 1 and the number itself are disallowed, the answer is 12 with factors 2,3,4 and 6.
the answer would seem to be ten.
10