18820417

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{10627}}^1$

素因数の和:10668

約数の個数: 16

約数和(自身を含む): 24486912

約数和(自身を除く): 5666495

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 10627, 74389, 116897, 244421, 818279, 1710947, 2688631, 18820417]

約数ペア:

[(1, 18820417), (7, 2688631), (11, 1710947), (23, 818279), (77, 244421), (161, 116897), (253, 74389), (1771, 10627)]