20521618

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1601}}^1$

素因数の和:1662

約数の個数: 32

約数和(自身を含む): 36333360

約数和(自身を除く): 15811742

約数列:

[1, 2, 13, 17, 26, 29, 34, 58, 221, 377, 442, 493, 754, 986, 1601, 3202, 6409, 12818, 20813, 27217, 41626, 46429, 54434, 92858, 353821, 603577, 707642, 789293, 1207154, 1578586, 10260809, 20521618]

約数ペア:

[(1, 20521618), (2, 10260809), (13, 1578586), (17, 1207154), (26, 789293), (29, 707642), (34, 603577), (58, 353821), (221, 92858), (377, 54434), (442, 46429), (493, 41626), (754, 27217), (986, 20813), (1601, 12818), (3202, 6409)]