21067684

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{478811}}^1$

素因数の和:478826

約数の個数: 12

約数和(自身を含む): 40220208

約数和(自身を除く): 19152524

約数列:

[1, 2, 4, 11, 22, 44, 478811, 957622, 1915244, 5266921, 10533842, 21067684]

約数ペア:

[(1, 21067684), (2, 10533842), (4, 5266921), (11, 1915244), (22, 957622), (44, 478811)]