395219domain: NAppears in sequencesComposite squarefree numbers n such that p-d(n) divides n+d(n), where p are the prime factors of n and d(n) the number of divisors of n.at n=33A228301Smallest k for which the number of divisors d of k such that tau(d*k) = tau(k/d + d) is equal to n, where tau = A000005.at n=7A392550