21054189

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{317}}^1$

素因数の和:477

約数の個数: 24

約数和(自身を含む): 30726432

約数和(自身を除く): 9672243

約数列:

[1, 3, 13, 39, 131, 169, 317, 393, 507, 951, 1703, 4121, 5109, 12363, 22139, 41527, 53573, 66417, 124581, 160719, 539851, 1619553, 7018063, 21054189]

約数ペア:

[(1, 21054189), (3, 7018063), (13, 1619553), (39, 539851), (131, 160719), (169, 124581), (317, 66417), (393, 53573), (507, 41527), (951, 22139), (1703, 12363), (4121, 5109)]