685828

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:148

約数の個数: 36

約数和(自身を含む): 1433740

約数和(自身を除く): 747912

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 109, 121, 143, 218, 242, 286, 436, 484, 572, 1199, 1417, 1573, 2398, 2834, 3146, 4796, 5668, 6292, 13189, 15587, 26378, 31174, 52756, 62348, 171457, 342914, 685828]

約数ペア:

[(1, 685828), (2, 342914), (4, 171457), (11, 62348), (13, 52756), (22, 31174), (26, 26378), (44, 15587), (52, 13189), (109, 6292), (121, 5668), (143, 4796), (218, 3146), (242, 2834), (286, 2398), (436, 1573), (484, 1417), (572, 1199)]