21668911

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{521}}^1$

素因数の和:750

約数の個数: 16

約数和(自身を含む): 25056000

約数和(自身を除く): 3387089

約数列:

[1, 11, 19, 199, 209, 521, 2189, 3781, 5731, 9899, 41591, 103679, 108889, 1140469, 1969901, 21668911]

約数ペア:

[(1, 21668911), (11, 1969901), (19, 1140469), (199, 108889), (209, 103679), (521, 41591), (2189, 9899), (3781, 5731)]