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A triperfect number is defined by σ(n) = 3n and remains a rare curiosity in number theory.
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A triperfect number is defined by σ(n) = 3n and remains a rare curiosity in number theory.
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Related words
triperfect
Adjective
not-comparable
Japanese Meaning
数学において、約数の和がその数の3倍になる多重完全数、すなわち数nについてσ(n)=3nを満たす数
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