英语词汇“perfect number”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	perfect number
释义	perfect number nounmaths Other entries for this word perfect square number noun DEFINITIONS1 1 a positive integer that is equal to the sum of all its proper factors 28 is a perfect number since 1 + 2 + 4 + 7 + 14 = 28. Submitted by: Samuel Chung from Mexico on 08/09/2018 Open Dictionary - September2018 Noun☞perfect number
随便看	be happy for someone be happy to do something be hard hit/hit hard be hard on something be hard-pressed (to do something) be hard put/pressed/pushed to do something be hard to beat be harnessed to behave be/have done with it be/have something to do with something behavior behavioral behavioralism behavioralist behaviorism behaviorist learning theory behaviour behavioural behavioural economics behaviouralism behaviouralist behaviourism behaviourist learning theory behead

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