21898443

素因数分解:

$3^1\times 7^2\times {\mathrm{311}}^1\times {\mathrm{479}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 34145280

約数和(自身を除く): 12246837

約数列:

[1, 3, 7, 21, 49, 147, 311, 479, 933, 1437, 2177, 3353, 6531, 10059, 15239, 23471, 45717, 70413, 148969, 446907, 1042783, 3128349, 7299481, 21898443]

約数ペア:

[(1, 21898443), (3, 7299481), (7, 3128349), (21, 1042783), (49, 446907), (147, 148969), (311, 70413), (479, 45717), (933, 23471), (1437, 15239), (2177, 10059), (3353, 6531)]