21805399

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{6907}}^1$

素因数の和:6966

約数の個数: 16

約数和(自身を含む): 27853056

約数和(自身を除く): 6047657

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 6907, 48349, 75977, 283187, 531839, 1982309, 3115057, 21805399]

約数ペア:

[(1, 21805399), (7, 3115057), (11, 1982309), (41, 531839), (77, 283187), (287, 75977), (451, 48349), (3157, 6907)]