Quantum redactiones paginae "Viginti" differant

'''20''' est [[numerus naturalis]] post [[19 (numerus)|19]] et ante [[21 (numerus)|21]], cuius [[factorizatio]] est [[2 (numerus)|2]]² × [[5 (numerus)|5]].

 

*20 est fundamenta [[vicesimal]]ium systematum numerorum.

*20 olim fuit [[aetas maioritatis]] in [[Iaponia]] et in [[traditio]]ne Iaponica.<ref>{{cite web|url=https://www.japan-experience.com/to-know/visiting-japan/age-of-majority-in-japan-changed-to-18|title=Japan's Age of Majority Changed to 18 - Living the Japon.com|author=|date=|website=www.japan-experience.com|accessdate=19 March 2018}}.</ref>