Restricted Divisor Function
The sum of the Aliquot Divisors of 
, given by
where
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
References
Sloane, N. J. A. SequenceA001065/M2226in ``An On-Line Version of the Encyclopedia of Integer Sequences.''http://www.research.att.com/~njas/sequences/eisonline.html and Sloane, N. J. A. and Plouffe, S.The Encyclopedia of Integer Sequences. San Diego: Academic Press, 1995.
- Plane Partition
- Plane Symmetry Groups
- Planted Planar Tree
- Plastic Constant
- Plat
- Plateau Curves
- Plateau's Laws
- Plateau's Problem
- Platonic Solid
- Plato's Number
- Platykurtic
- p-Layer
- Playfair's Axiom
- Plethysm
- Plot
- Plouffe's Constant
- Plumbing
- Pluperfect Number
- Plurisubharmonic Function
- Plus
- Plus or Minus
- Plus Perfect Number
- Plus Sign
- Plutarch Numbers
- Plücker Characteristics