544310

Appears in sequences

• Numbers k whose abundance is 20: sigma(k) - 2*k = 20.at n=7A223611
• Numbers k such that sigma(k) == 0 (mod k+10).at n=8A274565
• Subsequence of A071395. The extra constraint is m is not a term if m*q/p is abundant where prime p|m and q is the least prime larger than p.at n=29A333967
• Unitary Zumkeller numbers (A290466) whose set of unitary divisors can be partitioned into two disjoint sets of equal sum in a single way.at n=15A335202
• Unitary pseudoperfect numbers k such that no subset of the nontrivial unitary divisors {d|k : 1 < d < k, gcd(d, k/d) = 1} adds up to k.at n=9A342399