21038391

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19319}}^1$

素因数の和:19347

約数の個数: 18

約数和(自身を含む): 33404280

約数和(自身を除く): 12365889

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 19319, 57957, 173871, 212509, 637527, 1912581, 2337599, 7012797, 21038391]

約数ペア:

[(1, 21038391), (3, 7012797), (9, 2337599), (11, 1912581), (33, 637527), (99, 212509), (121, 173871), (363, 57957), (1089, 19319)]