1360810
domain: N
Appears in sequences
- Numbers whose deficiency is 20: sigma(k) - 2*k = -20.at n=7A223607
- Numbers k such that sigma(k) == 0 (mod k-10).at n=15A274566
- Unitary barely deficient numbers: unitary deficient numbers k such that usigma(k)/k > usigma(m)/m for all unitary deficient numbers m < k, where usigma(k) is the sum of the unitary divisors of k (A034448).at n=13A302572
- Numbers n for which A294898(n) is not zero and A294898(n) divides A000120(n); numbers for which A326130(n) = abs(A294898(n)).at n=32A326132