21258558

素因数分解:

$2^1\times 3^3\times {\mathrm{393677}}^1$

素因数の和:393688

約数の個数: 16

約数和(自身を含む): 47241360

約数和(自身を除く): 25982802

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 393677, 787354, 1181031, 2362062, 3543093, 7086186, 10629279, 21258558]

約数ペア:

[(1, 21258558), (2, 10629279), (3, 7086186), (6, 3543093), (9, 2362062), (18, 1181031), (27, 787354), (54, 393677)]