204991081780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{56929}}^1$

素因数の和:57113

約数の個数: 96

約数和(自身を含む): 454492684800

約数和(自身を除く): 249501603020

約数列:

[1, 2, 4, 5, 10, 20, 43, 53, 79, 86, 106, 158, 172, 212, 215, 265, 316, 395, 430, 530, 790, 860, 1060, 1580, 2279, 3397, 4187, 4558, 6794, 8374, 9116, 11395, 13588, 16748, 16985, 20935, 22790, 33970, 41870, 45580, 56929, 67940, 83740, 113858, 180041, 227716, 284645, 360082, 569290, 720164, 900205, 1138580, 1800410, 2447947, 3017237, 3600820, 4497391, 4895894, 6034474, 8994782, 9791788, 12068948, 12239735, 15086185, 17989564, 22486955, 24479470, 30172370, 44973910, 48958940, 60344740, 89947820, 129741191, 193387813, 238361723, 259482382, 386775626, 476723446, 518964764, 648705955, 773551252, 953446892, 966939065, 1191808615, 1297411910, 1933878130, 2383617230, 2594823820, 3867756260, 4767234460, 10249554089, 20499108178, 40998216356, 51247770445, 102495540890, 204991081780]

約数ペア:

[(1, 204991081780), (2, 102495540890), (4, 51247770445), (5, 40998216356), (10, 20499108178), (20, 10249554089), (43, 4767234460), (53, 3867756260), (79, 2594823820), (86, 2383617230), (106, 1933878130), (158, 1297411910), (172, 1191808615), (212, 966939065), (215, 953446892), (265, 773551252), (316, 648705955), (395, 518964764), (430, 476723446), (530, 386775626), (790, 259482382), (860, 238361723), (1060, 193387813), (1580, 129741191), (2279, 89947820), (3397, 60344740), (4187, 48958940), (4558, 44973910), (6794, 30172370), (8374, 24479470), (9116, 22486955), (11395, 17989564), (13588, 15086185), (16748, 12239735), (16985, 12068948), (20935, 9791788), (22790, 8994782), (33970, 6034474), (41870, 4895894), (45580, 4497391), (56929, 3600820), (67940, 3017237), (83740, 2447947), (113858, 1800410), (180041, 1138580), (227716, 900205), (284645, 720164), (360082, 569290)]