21989858

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{24379}}^1$

素因数の和:24433

約数の個数: 16

約数和(自身を含む): 36862560

約数和(自身を除く): 14872702

約数列:

[1, 2, 11, 22, 41, 82, 451, 902, 24379, 48758, 268169, 536338, 999539, 1999078, 10994929, 21989858]

約数ペア:

[(1, 21989858), (2, 10994929), (11, 1999078), (22, 999539), (41, 536338), (82, 268169), (451, 48758), (902, 24379)]