If the reciprocal sum of all divisors of n is a positive integer, then n is called an Ore s number.
设ｎ是大于１的正整数，如果ｎ的所有约数之倒数和仍是正整数，则称ｎ是Ｏｒｅ数。
The number of temperament recorded in Huainan Honglie·Tianwen Xun (Chronometer) showed in two different levels: large number and divisor.
天文训》所记述的律数,呈现两个不同的层面——大数与约数。
Let d(n) and φ(n) denote the divisor function and Euler s function of n respectively.
对于正整数ｎ，设ｄ（ｎ）、φ（ｎ）分别是ｎ的约数函数和Ｅｕｌｅｒ函数。
In this paper, using some elementary methods, we discuss an arithmetic functional equation containing the divisor function, the sum of divisors and the Euler totient function, All even integer solutions of the equation are given, This result solves a problem concerning the generalized perfect numbers.
本文运用初等方法,讨论了一个含有约数函数、约数和函数与Euler函数的数论函数方程,给出了该方程的全部偶数解,并且解决了一个有关广义完全数的问题。
For any positive integer n,let d(n),φ(n) and σ(n) denote the divisor function,Euler\'s totient function and the sum of distinct divisors of n respectively.
对于正整数n,设d(n),φ(n),σ(n)分别是n的约数函数、Euler函数和约数和函数。
The greatest common divisor of 24 and 30 is 6 24.
和 30 的最大公约数为6。
An aliquot part.
整除数，约数能整除的部分
The number of tricks thus bid.
定约墩数这样竞叫时约定的墩方数目
remeasurement contract
按量数付款工程合约
I make the total about &50.
我算总数约为50镑。
Mini-Hang Seng Index Futures Contract
小型恒生指数期货合约
approximately(a number,weight,price,etc)
大约（某数量、重量、价格等）
yorkshire skein woolen count
约克夏粗纺毛纱支数
minimum and maximum amount
最小与最大约定数量
I make the total (to be) about 50.
我看总数大约50英镑.
New York Stock Exchange index
纽约证券交易所指数
Framework Convention on the Protection of National Minorities
保护少数民族框架公约
Rules for rounding off of numerical values
GB/T8170-1987数值修约规则
European Convention for the Protection of National Minorities
欧洲保护少数民族公约
The number was estimated roundly at 500.
该数约略估计为500。
one or more international conventions
一项或数项国际公约
Mini-Hang Seng Index Options Contract
小型恒生指数期权合约
data acquisition and reduction system
数据采集和简约系统