20421412

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42193}}^1$

素因数の和:42219

約数の個数: 18

約数和(自身を含む): 39282614

約数和(自身を除く): 18861202

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42193, 84386, 168772, 464123, 928246, 1856492, 5105353, 10210706, 20421412]

約数ペア:

[(1, 20421412), (2, 10210706), (4, 5105353), (11, 1856492), (22, 928246), (44, 464123), (121, 168772), (242, 84386), (484, 42193)]