218510019

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{266801}}^1$

素因数の和:266827

約数の個数: 24

約数和(自身を含む): 388463712

約数和(自身を除く): 169953693

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 266801, 800403, 1867607, 2401209, 3468413, 5602821, 10405239, 16808463, 24278891, 31215717, 72836673, 218510019]

約数ペア:

[(1, 218510019), (3, 72836673), (7, 31215717), (9, 24278891), (13, 16808463), (21, 10405239), (39, 5602821), (63, 3468413), (91, 2401209), (117, 1867607), (273, 800403), (819, 266801)]