On Zumkeller numbers (Q1938556)
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scientific article
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On Zumkeller numbers |
scientific article |
Statements
On Zumkeller numbers (English)
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21 February 2013
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perfect numbers
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practical numbers
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Zumkeller numbers
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divisor-sum-function
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