Perfect number
Perfect number
Number equal to the sum of its proper divisors.
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Readers' pathsAug 2026 – Oct 2026
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Weird number
Number that is abundant but not semiperfect.
4.3%
496 (number)
Natural number.
3.8%
On-Line Encyclopedia of Integer Sequences
Online database of integer sequences.
2.9%
28 (number)
Natural number.
2.9%
Number theory
Branch of pure mathematics.
2.2%
Divisor
Integer that divides another integer.
2%
Practical number
Number whose sums of distinct divisors represent all smaller numbers.
1.9%
Divisor function
Arithmetic function related to the divisors of an integer.
1.7%
Euclid's Elements
Mathematical treatise by Euclid.
1.7%
6
Natural number.
1.6%
Readers come from
Share of the 6,412 readers arriving from another article
28 (number)
Natural number.
4.3%
Abundant number
Number that is less than the sum of its proper divisors.
3.1%
Weird number
Number that is abundant but not semiperfect.
2.7%
Semiperfect number
Number equal to the sum of all or some of its divisors.
2.5%
Prime number
Number divisible only by 1 and itself.
2.3%
496 (number)
Natural number.
1.6%
Integer sequence
Ordered list of whole numbers.
1.5%
Superior highly composite number
Class of natural numbers with many divisors.
1.3%
2,147,483,647
Natural number.
1.2%
Triangular number
Figurate number.
1.2%