20144257040

素因数分解:

$2^4\times 5^1\times {\mathrm{1801}}^1\times {\mathrm{139813}}^1$

素因数の和:141627

約数の個数: 40

約数和(自身を含む): 46861738008

約数和(自身を除く): 26717480968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1801, 3602, 7204, 9005, 14408, 18010, 28816, 36020, 72040, 139813, 144080, 279626, 559252, 699065, 1118504, 1398130, 2237008, 2796260, 5592520, 11185040, 251803213, 503606426, 1007212852, 1259016065, 2014425704, 2518032130, 4028851408, 5036064260, 10072128520, 20144257040]

約数ペア:

[(1, 20144257040), (2, 10072128520), (4, 5036064260), (5, 4028851408), (8, 2518032130), (10, 2014425704), (16, 1259016065), (20, 1007212852), (40, 503606426), (80, 251803213), (1801, 11185040), (3602, 5592520), (7204, 2796260), (9005, 2237008), (14408, 1398130), (18010, 1118504), (28816, 699065), (36020, 559252), (72040, 279626), (139813, 144080)]