Question 62
For a positive integer $n$ denote by $s(n)$ the sum of all positive divisors of $n$ and by $d(n)$ the number of positive divisors of $n$. Determine all positive integers $n$ such that
$$
s(n) = n + d(n) + 1.
$$
(Nikola Adžaga)
$$
s(n) = n + d(n) + 1.
$$
(Nikola Adžaga)