Last Updated
：2025/12/07
friendly number
Noun
Japanese Meaning
別の正の整数と同じ豊富さ指数、すなわち約数の和をその数で割った値が一致する数 / 同じabundancy（約数の和と数自身との比率）を持つ正の整数
（ plural ）
Quizzes for review
A number that shares its abundancy with another positive integer.
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friendly number
A friendly number like 630 can form a pair with another integer when they share the same abundancy.
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A friendly number like 630 can form a pair with another integer when they share the same abundancy.
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English - English
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