# Category:Perfect Numbers

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This category contains results about **Perfect Numbers**.

Definitions specific to this category can be found in **Definitions/Perfect Numbers**.

A **perfect number** is a (strictly) positive integer equal to its aliquot sum.

## Subcategories

This category has the following 9 subcategories, out of 9 total.

## Pages in category "Perfect Numbers"

The following 23 pages are in this category, out of 23 total.

### E

### O

### P

- Perfect Number ends in 6 or 28 preceded by Odd Digit
- Perfect Number has at least Two Distinct Prime Factors
- Perfect Number is Ore Number
- Perfect Number is Primitive Semiperfect
- Perfect Number is Sum of Successive Odd Cubes except 6
- Perfect Number which is Sum of Equal Powers of Two Numbers
- Perfect Number/Flow Chart
- Perfect Number/Sequence
- Product of Factors of Perfect Number