21994011

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20887}}^1$

素因数の和:20912

約数の個数: 20

約数和(自身を含む): 35384272

約数和(自身を除く): 13390261

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20887, 62661, 187983, 271531, 563949, 814593, 1691847, 2443779, 7331337, 21994011]

約数ペア:

[(1, 21994011), (3, 7331337), (9, 2443779), (13, 1691847), (27, 814593), (39, 563949), (81, 271531), (117, 187983), (351, 62661), (1053, 20887)]