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・ 44M Tas
・ 44M Tas Rohamlöveg
・ 44P/Reinmuth
・ 44th (East Essex) Regiment of Foot
・ 44th (Ferozepore) Brigade
・ 44th (Home Counties) Division
・ 44th (Howitzer) Brigade Royal Field Artillery
・ 44th Academy Awards
・ 44th Air Defense Artillery Regiment
・ 44th Air Division
・ 44th Airborne Division (India)
・ 44th All Japan Rugby Football Championship
・ 44th and Parkside Ballpark
・ 44 & 66
・ 44 (disambiguation)
44 (number)
・ 44 Adelaide
・ 44 Andromedae
・ 44 Aquarii
・ 44 BC
・ 44 Blue Productions
・ 44 Boötis
・ 44 Duos for Two Violins
・ 44 Eridani
・ 44 Harvest House
・ 44 Headquarters and Support Squadron
・ 44 Inch Chest
・ 44 Liquormart, Inc. v. Rhode Island
・ 44 Magnum (band)
・ 44 Medical Task Group


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44 (number) : ウィキペディア英語版
44 (number)

44 (forty-four) is the natural number following 43 and preceding 45.
== In mathematics ==

Forty-four is a tribonacci number, an octahedral number and the number of derangements of 5 items.
Since the greatest prime factor of 442 + 1 = 1937 is 149 and thus more than 44 twice, 44 is a Størmer number.
The aliquot sequence of 44 is (44,40,50,43,1,0).
Given Euler's totient function, \varphi(44)=20 and \varphi(69)=44.
In decimal notation (base 10), 44 is a palindromic number and a happy number,

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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