- n). A
hyperperfect number is a k-
hyperperfect number for some
integer k.
Hyperperfect numbers generalize perfect numbers,
which are 1-
hyperperfect. The...
- 325 is the
smallest (and only known) 3-
hyperperfect number. Sloane, N. J. A. (ed.). "Sequence A034897 (
Hyperperfect numbers: x such that x = 1 + k*(sigma(x)-x-1)...
- 7, 0, −3617, 0, 43867, 0, ... A027641
Hyperperfect numbers 6, 21, 28, 301, 325, 496, 697, ... k-
hyperperfect numbers, i.e. n for
which the
equality n...
- sums
Perfect Almost perfect Quasiperfect Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas...
-
abundant Deficient Descartes Hemiperfect Highly abundant Highly composite Hyperperfect Multiply perfect Perfect Practical Primitive abundant Quasiperfect Refactorable...
-
abundant Deficient Descartes Hemiperfect Highly abundant Highly composite Hyperperfect Multiply perfect Perfect Practical Primitive abundant Quasiperfect Refactorable...
- sums
Perfect Almost perfect Quasiperfect Multiply perfect Hemiperfect Hyperperfect Superperfect Unitary perfect Semiperfect Practical Descartes Erdős–Nicolas...
-
numbers Highly composite numbers Highly totient numbers Home
primes Hyperperfect numbers Juggler sequence Kolakoski sequence Lucky numbers Lucas numbers...
- Perfect, Quasi-Perfect, Pseudoperfect, Harmonic, Weird,
Multiperfect and
Hyperperfect Numbers".
Unsolved Problems in
Number Theory (2nd ed.). New York: Springer-Verlag...
-
abundant Deficient Descartes Hemiperfect Highly abundant Highly composite Hyperperfect Multiply perfect Perfect Practical Primitive abundant Quasiperfect Refactorable...
