1
be a divisor of sth
表示一个数能整除另一个数。
7 is a divisor of 28.
7是28的一个除数。
除数
先理解核心含义，再看它在真实句子里的用法。
除数
The number by which another number is divided in a division expression.
7 is a divisor of 28.
7是28的一个除数。
除法运算中,用来除另一个数的数。
In an expression involving division, the number by which another number is being divided.
能整除另一个整数的整数之一
one of two or more integers that can be exactly divided into another integer
能整除另一个整数的整数,前者称为后者的因数。
An integer that divides another integer an integral number of times, the former being called a divisor of the latter.
除法中被除数除以的数
the number by which a dividend is divided
If the remainder is not zero, try another divisor.
如果余数不为零，尝试另一个除数。
Every integer greater than 1 has at least two divisors: 1 and itself.
每个大于1的整数至少有两个约数：1和它本身。
To simplify the fraction, divide the numerator and the denominator by their greatest common divisor.
要化简这个分数，用分子和分母的最大公约数除它们。
表示一个数能整除另一个数。
7 is a divisor of 28.
7是28的一个除数。
指能同时整除多个数的数，常用在数学中。
We need to find the common divisors of these two numbers.
我们需要找到这两个数的公约数。
Not this
In 10 ÷ 2 = 5, the divisor is 10.
Use this
In 10 ÷ 2 = 5, the dividend is 10.
中文中“除数”和“被除数”容易混淆。学习者误将“被除数”用“divisor”表达，正确应为“dividend”。
Not this
We need to divisor 20 by 4.
Use this
We need to divide 20 by the divisor 4.
“divisor”是名词，不能作动词使用。学习者受中文影响，将“除数”直接用作动词，正确动词应为“divide”。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
公约数
Twelve and eighteen have several common divisors, including 2, 3, and 6.
12和18有几个公约数，包括2、3和6。
最大公约数
The greatest common divisor of 24 and 36 is 12.
24和36的最大公约数是12。
正约数
A positive divisor of a number is any positive integer that divides it exactly.
一个数的正约数是能整除它的任何正整数。
真约数
A proper divisor of 12 is any divisor less than 12, such as 6.
12的真约数是任何小于12的约数，例如6。
零因子
In ring theory, a zero divisor is a nonzero element whose product with some other nonzero element is zero.
在环论中，零因子是非零元素，它与某个非零元素的乘积为零。
除数函数
The divisor function counts the number of positive divisors of an integer.
除数函数计算一个整数的正约数的个数。
Use divisor naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 divide（除）的变体，-or 像“做…者”；在除法里负责除别人的数就是除数。
语域：formal 常见场景：小学数学教材、数学习题、学术数学写作 divisor 是数学术语，通常出现在教材、习题和较正式的书面说明中；日常口语里比较常见于用“除以几”这类表达，而单独说 divisor 的机会较少。
Sound matches: visor, advisor, wiser, and riser rhyme with divisor (stressed /aɪ/ followed by /zɚ/). Supervisor also has the same final /vaɪzɚ/ chunk, but its main stress falls earlier. Beware lookalikes: division /dɪˈvɪʒən/ and divisive /dɪˈvaɪsɪv/ have different vowels and consonants despite similar spellings.
Dictionary facts from ECDICT, WIKTIONARY.