20235501220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{254791}}^1$

素因数の和:254849

約数の個数: 72

約数和(自身を含む): 48926179008

約数和(自身を除く): 28690677788

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 361, 380, 418, 722, 836, 1045, 1444, 1805, 2090, 3610, 3971, 4180, 7220, 7942, 15884, 19855, 39710, 79420, 254791, 509582, 1019164, 1273955, 2547910, 2802701, 4841029, 5095820, 5605402, 9682058, 11210804, 14013505, 19364116, 24205145, 28027010, 48410290, 53251319, 56054020, 91979551, 96820580, 106502638, 183959102, 213005276, 266256595, 367918204, 459897755, 532513190, 919795510, 1011775061, 1065026380, 1839591020, 2023550122, 4047100244, 5058875305, 10117750610, 20235501220]

約数ペア:

[(1, 20235501220), (2, 10117750610), (4, 5058875305), (5, 4047100244), (10, 2023550122), (11, 1839591020), (19, 1065026380), (20, 1011775061), (22, 919795510), (38, 532513190), (44, 459897755), (55, 367918204), (76, 266256595), (95, 213005276), (110, 183959102), (190, 106502638), (209, 96820580), (220, 91979551), (361, 56054020), (380, 53251319), (418, 48410290), (722, 28027010), (836, 24205145), (1045, 19364116), (1444, 14013505), (1805, 11210804), (2090, 9682058), (3610, 5605402), (3971, 5095820), (4180, 4841029), (7220, 2802701), (7942, 2547910), (15884, 1273955), (19855, 1019164), (39710, 509582), (79420, 254791)]