21338019

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{18379}}^1$

素因数の和:18431

約数の個数: 16

約数和(自身を含む): 32348800

約数和(自身を除く): 11010781

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 18379, 55137, 165411, 496233, 790297, 2370891, 7112673, 21338019]

約数ペア:

[(1, 21338019), (3, 7112673), (9, 2370891), (27, 790297), (43, 496233), (129, 165411), (387, 55137), (1161, 18379)]