168756

Appears in sequences

• Numbers n such that sigma(n) = 10*phi(n) (where sigma=A000203, phi=A000010).at n=17A171256
• Size of n-th-order intersection graph of the matching graph G_7.at n=4A201468
• Let s denote the sum of the deficient numbers in the aliquot parts of x. Sequence lists numbers x such that sigma(s) = usigma(x), where usigma(x) is the sum of the unitary divisors of x (A034448).at n=23A258134
• Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^binomial(k+4,5).at n=23A344205