289648

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:472

約数の個数: 20

約数和(自身を含む): 575608

約数和(自身を除く): 285960

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 421, 688, 842, 1684, 3368, 6736, 18103, 36206, 72412, 144824, 289648]

約数ペア:

[(1, 289648), (2, 144824), (4, 72412), (8, 36206), (16, 18103), (43, 6736), (86, 3368), (172, 1684), (344, 842), (421, 688)]