20181978620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{3209}}^1$

素因数の和:3435

約数の個数: 96

約数和(自身を含む): 44419415040

約数和(自身を除く): 24237436420

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 103, 142, 172, 206, 215, 284, 355, 412, 430, 515, 710, 860, 1030, 1420, 2060, 3053, 3209, 4429, 6106, 6418, 7313, 8858, 12212, 12836, 14626, 15265, 16045, 17716, 22145, 29252, 30530, 32090, 36565, 44290, 61060, 64180, 73130, 88580, 137987, 146260, 227839, 275974, 314459, 330527, 455678, 551948, 628918, 661054, 689935, 911356, 1139195, 1257836, 1322108, 1379870, 1572295, 1652635, 2278390, 2759740, 3144590, 3305270, 4556780, 6289180, 6610540, 9797077, 14212661, 19594154, 23467417, 28425322, 39188308, 46934834, 48985385, 56850644, 71063305, 93869668, 97970770, 117337085, 142126610, 195941540, 234674170, 284253220, 469348340, 1009098931, 2018197862, 4036395724, 5045494655, 10090989310, 20181978620]

約数ペア:

[(1, 20181978620), (2, 10090989310), (4, 5045494655), (5, 4036395724), (10, 2018197862), (20, 1009098931), (43, 469348340), (71, 284253220), (86, 234674170), (103, 195941540), (142, 142126610), (172, 117337085), (206, 97970770), (215, 93869668), (284, 71063305), (355, 56850644), (412, 48985385), (430, 46934834), (515, 39188308), (710, 28425322), (860, 23467417), (1030, 19594154), (1420, 14212661), (2060, 9797077), (3053, 6610540), (3209, 6289180), (4429, 4556780), (6106, 3305270), (6418, 3144590), (7313, 2759740), (8858, 2278390), (12212, 1652635), (12836, 1572295), (14626, 1379870), (15265, 1322108), (16045, 1257836), (17716, 1139195), (22145, 911356), (29252, 689935), (30530, 661054), (32090, 628918), (36565, 551948), (44290, 455678), (61060, 330527), (64180, 314459), (73130, 275974), (88580, 227839), (137987, 146260)]