2646483840

Appears in sequences

• Numbers n having a proper divisor d such that sigma(n) - k*d = k*n. Case k = 5.at n=9A291459
• Numbers m such that sigma(m)/esigma(m) > sigma(k)/esigma(k) for all k < m, where sigma(m) is the sum of divisors of m (A000203) and esigma(m) is the sum of exponential divisors of m (A051377).at n=21A335396
• Nonexponential superabundant numbers: numbers m such that nesigma(m)/m > nesigma(k)/k for all k < m, where nesigma(m) is the sum of nonexponential divisors of m (A160135).at n=25A348630
• Numbers that have a record number of (1+phi)-divisors (A061389).at n=34A377711