20873670490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{347}}^1\times {\mathrm{431}}^1\times {\mathrm{821}}^1$

素因数の和:1623

約数の個数: 64

約数和(自身を含む): 40038686208

約数和(自身を除く): 19165015718

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 347, 431, 694, 821, 862, 1642, 1735, 2155, 3470, 4105, 4310, 5899, 7327, 8210, 11798, 13957, 14654, 27914, 29495, 36635, 58990, 69785, 73270, 139570, 149557, 284887, 299114, 353851, 569774, 707702, 747785, 1424435, 1495570, 1769255, 2542469, 2848870, 3538510, 4843079, 5084938, 6015467, 9686158, 12030934, 12712345, 24215395, 25424690, 30077335, 48430790, 60154670, 122786297, 245572594, 613931485, 1227862970, 2087367049, 4174734098, 10436835245, 20873670490]

約数ペア:

[(1, 20873670490), (2, 10436835245), (5, 4174734098), (10, 2087367049), (17, 1227862970), (34, 613931485), (85, 245572594), (170, 122786297), (347, 60154670), (431, 48430790), (694, 30077335), (821, 25424690), (862, 24215395), (1642, 12712345), (1735, 12030934), (2155, 9686158), (3470, 6015467), (4105, 5084938), (4310, 4843079), (5899, 3538510), (7327, 2848870), (8210, 2542469), (11798, 1769255), (13957, 1495570), (14654, 1424435), (27914, 747785), (29495, 707702), (36635, 569774), (58990, 353851), (69785, 299114), (73270, 284887), (139570, 149557)]