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Zumkeller number

natural number whose divisors can be partitioned into two disjoint sets with equal sum
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Zumkeller number

Summary

Key Facts

  • Reinhard Zumkeller is named after Zumkeller number[1].
  • Zumkeller number is a type of composite number[2].

Body

Definition and Type

Zumkeller number is a type of composite number[2].

Origins

Reinhard Zumkeller is named after Zumkeller number[1].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [1] ↑ . wikidata.org.
  2. [2] ↑ . wikidata.org.

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Zumkeller number. Retrieved May 7, 2026, from https://4ort.xyz/entity/zumkeller-number
MLA “Zumkeller number.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/zumkeller-number.
BibTeX @misc{4ortxyz_zumkeller-number_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Zumkeller number}}, year = {2026}, url = {https://4ort.xyz/entity/zumkeller-number}, note = {Accessed: 2026-05-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Zumkeller number — https://4ort.xyz/entity/zumkeller-number (retrieved 2026-05-07)

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