英语词汇Untouchable number怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	Untouchable number
释义	Untouchable number 简明释义不可及数（不可及数是无法表示为任意一个正整数的全部正因子之和的正整数，其中5可能是唯一的奇数不可及数。不可及数有无穷多个，且不可能比质数多1或多3，也不可能是完全数）英英释义 abstract: 1 An untouchable number is a positive integer that cannot be expressed as the sum of all the proper divisors of any positive integer (including the untouchable number itself). 权威例句 1. The way a number of Indian opposition parties are rallying around Mayawati, a Dalit or "untouchable" icon, and touting her as a future prime minister must be gladdening the hearts of 160 million members of the community she represents. BBC: India's Dalit icon aims for top job
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