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自然數 来自维基百科,自由的百科全书
426是425到427之间的一个自然数,同时是一个楔形数、非欧拉商数、不可及数及有形数[1]。
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Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.