20181027355

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{661}}^1\times {\mathrm{881}}^1$

素因数の和:1815

約数の個数: 32

約数和(自身を含む): 25223788800

約数和(自身を除く): 5042761445

約数列:

[1, 5, 29, 145, 239, 661, 881, 1195, 3305, 4405, 6931, 19169, 25549, 34655, 95845, 127745, 157979, 210559, 582341, 789895, 1052795, 2911705, 4581391, 6106211, 16887889, 22906955, 30531055, 84439445, 139179499, 695897495, 4036205471, 20181027355]

約数ペア:

[(1, 20181027355), (5, 4036205471), (29, 695897495), (145, 139179499), (239, 84439445), (661, 30531055), (881, 22906955), (1195, 16887889), (3305, 6106211), (4405, 4581391), (6931, 2911705), (19169, 1052795), (25549, 789895), (34655, 582341), (95845, 210559), (127745, 157979)]