Last Updated
：2025/11/26
weird number
Noun
Japanese Meaning
奇異数（英: weird number）とは、固有約数（1を含み自分自身を除く約数）の和がその数より大きい「過剰数」でありながら、これらの約数のいかなる部分集合をとってもその数に等しくならない自然数を指す。
（ plural ）
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(number theory) A natural number that is abundant but not semiperfect; one for which the sum of the proper divisors (including 1 but not itself) is greater than the number, but no subset of those divisors sums to the number itself.
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weird number
The mathematician discovered a new weird number that challenged existing conjectures about abundant integers.
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The mathematician discovered a new weird number that challenged existing conjectures about abundant integers.
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