perfect number
positive integer which equals the sum of all its divisors
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perfect number
Summary
perfect number is a type of integer[1]. It ranks in the top 3% of type_of_integer entities by monthly Wikipedia readership (1,189 views/month).[2]
Key Facts
- perfect number's image is recorded as Perfect number Cuisenaire rods 6.png[3].
- perfect number's instance of is recorded as type of integer[4].
- perfect number's GND ID is recorded as 7683309-4[5].
- perfect number's subclass of is recorded as pseudoperfect number[6].
- perfect number's subclass of is recorded as harmonic divisor number[7].
- perfect number's subclass of is recorded as even number[8].
- perfect number's Commons category is recorded as Perfect number[9].
- perfect number's has part is recorded as odd perfect number[10].
- perfect number's Freebase ID is recorded as /m/05x6v[11].
- perfect number's OEIS ID is recorded as A000396[12].
- perfect number's topic's main category is recorded as Category:Perfect numbers[13].
- perfect number's Gran Enciclopèdia Catalana ID is recorded as 0153761[14].
- perfect number's described by source is recorded as Otto's encyclopedia[15].
- perfect number's described by source is recorded as Armenian Soviet Encyclopedia, vol. 5[16].
- perfect number's Encyclopædia Britannica Online ID is recorded as topic/perfect-number[17].
- perfect number's Stack Exchange tag is recorded as https://mathoverflow.net/tags/perfect-numbers[18].
- perfect number's Stack Exchange tag is recorded as https://math.stackexchange.com/tags/perfect-numbers[19].
- perfect number's defining formula is recorded as \sigma(n)-2n=s(n)-n=0[20].
- perfect number's MathWorld ID is recorded as PerfectNumber[21].
- perfect number's Great Russian Encyclopedia Online ID is recorded as 3588903[22].
- perfect number's does not have part is recorded as odd perfect number[23].
- perfect number's Great Norwegian Encyclopedia ID is recorded as perfekt_tall[24].
- perfect number's Rosetta Code page ID is recorded as Abundant,_deficient_and_perfect_number_classifications[25].
- perfect number's maintained by WikiProject is recorded as WikiProject Mathematics[26].
- perfect number's Microsoft Academic ID is recorded as 103996166[27].
Why It Matters
perfect number ranks in the top 3% of type_of_integer entities by monthly Wikipedia readership (1,189 views/month).[2] It has Wikipedia articles in 28 language editions, a strong signal of global cultural recognition.[28] It is known by 29 alternative names across languages and contexts.[29]