20171978239

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1039}}^1\times {\mathrm{1217}}^1$

素因数の和:2359

約数の個数: 32

約数和(自身を含む): 24077813760

約数和(自身を除く): 3905835521

約数列:

[1, 7, 43, 53, 301, 371, 1039, 1217, 2279, 7273, 8519, 15953, 44677, 52331, 55067, 64501, 312739, 366317, 385469, 451507, 1264463, 2367881, 2773543, 8851241, 16575167, 19414801, 54371909, 67016539, 380603363, 469115773, 2881711177, 20171978239]

約数ペア:

[(1, 20171978239), (7, 2881711177), (43, 469115773), (53, 380603363), (301, 67016539), (371, 54371909), (1039, 19414801), (1217, 16575167), (2279, 8851241), (7273, 2773543), (8519, 2367881), (15953, 1264463), (44677, 451507), (52331, 385469), (55067, 366317), (64501, 312739)]