In number theory, a weird number is a natural number that is abundant but not semiperfect. This means the sum of its proper divisors, the divisors less than the number itself, is greater than the number, yet no subset of those divisors adds up to the number exactly. Weird numbers sit between abundant numbers, whose divisors merely exceed the number, and semiperfect numbers, whose divisors can be combined to reach the number exactly. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
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Source Weird Number (Wikipedia)
Is Kind Of Object
Entity-backed identity for the object-kind enum value this mathematical object already carries, resolved to a mathematics concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The object-kind fact itself stays on the object unchanged.
Sources
1. Weird Number (Wikipedia)
In Branch: Number Theory, Lead sentenceQuote, In Branch: Number Theory, Lead sentence
In number theory, a weird number is a natural number that is abundant but not semiperfect.
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