Weird numbers: Difference between revisions
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* '''12''' is ''not'' a weird number. |
* '''12''' is ''not'' a weird number. |
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** It is abundant; its proper divisors '''1, 2, 3, 4, 6''' sum to '''16''' (which ''is'' > 12), |
** It is abundant; its proper divisors '''1, 2, 3, 4, 6''' sum to '''16''' (which ''is'' > 12), |
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** but it ''is'' semiperfect, |
** but it ''is'' semiperfect, e.g.: '''6 + 4 + 2 == 12'''. |
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* '''70''' ''is'' a weird number. |
* '''70''' ''is'' a weird number. |
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** It is abundant; its proper divisors '''1, 2, 5, 7, 10, 14, 35''' sum to '''74''' (which ''is'' > 70), |
** It is abundant; its proper divisors '''1, 2, 5, 7, 10, 14, 35''' sum to '''74''' (which ''is'' > 70), |
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