21917259

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3823}}^1$

素因数の和:3856

約数の個数: 36

約数和(自身を含む): 39670176

約数和(自身を除く): 17752917

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1911, 3823, 5733, 11469, 26761, 34407, 49699, 80283, 149097, 187327, 240849, 347893, 447291, 561981, 1043679, 1685943, 2435251, 3131037, 7305753, 21917259]

約数ペア:

[(1, 21917259), (3, 7305753), (7, 3131037), (9, 2435251), (13, 1685943), (21, 1043679), (39, 561981), (49, 447291), (63, 347893), (91, 240849), (117, 187327), (147, 149097), (273, 80283), (441, 49699), (637, 34407), (819, 26761), (1911, 11469), (3823, 5733)]