名词
中文翻译：因数的
同义词：
['factorial', 'factorial', 'factoriality']
例句：
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1.The number of factors is the product of all the numbers.
因数的数量是所有数字的乘积。
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2.The factorial of a number is the product of all positive integers up to that number.
一个数的阶乘是所有小于等于该数的正整数的乘积。
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3.The factorial of 15 is 15 * 14 * 13 * 12 * 11 = 1097656.
15的阶乘是15 * 14 * 13 * 12 * 11 = 1097656。