请输入您要查询的英文单词:
单词
perfect number
释义
perfect number
noun
maths
Other entries for this word
perfect square number
noun
DEFINITIONS
1
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
Noun
☞perfect number
随便看
microwave
microwaveable
microwave-safe
mid
mid-
mid-air
midas
mid-atlantic
midday
midden
middle
middle age
middle-aged
middle-aged spread
middle america
middlebrow
middle c
middle child/daughter/brother etc
middle child/daughter/brother etc.
middle-class
middle-click
middle ear
middle eight
middle england
middle english
英语词典包含67175条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。
Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2026/5/5 23:55:55