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Restricted Divisor Function


The sum of the Aliquot Divisors of $n$, given by

s(n)\equiv \sigma(n)-n,

where $\sigma(n)$ is the Divisor Function. The first few values are 0, 1, 1, 3, 1, 6, 1, 7, 4, 8, 1, 16, ... (Sloane's A001065).

See also Divisor Function


Sloane, N. J. A. Sequence A001065/M2226 in ``An On-Line Version of the Encyclopedia of Integer Sequences.'' and Sloane, N. J. A. and Plouffe, S. The Encyclopedia of Integer Sequences. San Diego: Academic Press, 1995.

© 1996-9 Eric W. Weisstein