21490881

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{3733}}^1$

素因数の和:3856

約数の個数: 16

約数和(自身を含む): 30469440

約数和(自身を除く): 8978559

約数列:

[1, 3, 19, 57, 101, 303, 1919, 3733, 5757, 11199, 70927, 212781, 377033, 1131099, 7163627, 21490881]

約数ペア:

[(1, 21490881), (3, 7163627), (19, 1131099), (57, 377033), (101, 212781), (303, 70927), (1919, 11199), (3733, 5757)]