20997218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{32911}}^1$

素因数の和:32953

約数の個数: 16

約数和(自身を含む): 35544960

約数和(自身を除く): 14547742

約数列:

[1, 2, 11, 22, 29, 58, 319, 638, 32911, 65822, 362021, 724042, 954419, 1908838, 10498609, 20997218]

約数ペア:

[(1, 20997218), (2, 10498609), (11, 1908838), (22, 954419), (29, 724042), (58, 362021), (319, 65822), (638, 32911)]