20278300460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{288947}}^1$

素因数の和:289007

約数の個数: 72

約数和(自身を含む): 48421905840

約数和(自身を除く): 28143605380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 121, 145, 220, 242, 290, 319, 484, 580, 605, 638, 1210, 1276, 1595, 2420, 3190, 3509, 6380, 7018, 14036, 17545, 35090, 70180, 288947, 577894, 1155788, 1444735, 2889470, 3178417, 5778940, 6356834, 8379463, 12713668, 15892085, 16758926, 31784170, 33517852, 34962587, 41897315, 63568340, 69925174, 83794630, 92174093, 139850348, 167589260, 174812935, 184348186, 349625870, 368696372, 460870465, 699251740, 921740930, 1013915023, 1843481860, 2027830046, 4055660092, 5069575115, 10139150230, 20278300460]

約数ペア:

[(1, 20278300460), (2, 10139150230), (4, 5069575115), (5, 4055660092), (10, 2027830046), (11, 1843481860), (20, 1013915023), (22, 921740930), (29, 699251740), (44, 460870465), (55, 368696372), (58, 349625870), (110, 184348186), (116, 174812935), (121, 167589260), (145, 139850348), (220, 92174093), (242, 83794630), (290, 69925174), (319, 63568340), (484, 41897315), (580, 34962587), (605, 33517852), (638, 31784170), (1210, 16758926), (1276, 15892085), (1595, 12713668), (2420, 8379463), (3190, 6356834), (3509, 5778940), (6380, 3178417), (7018, 2889470), (14036, 1444735), (17545, 1155788), (35090, 577894), (70180, 288947)]