21750801

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 32624640

約数和(自身を除く): 10873839

約数列:

[1, 3, 19, 23, 47, 57, 69, 141, 353, 437, 893, 1059, 1081, 1311, 2679, 3243, 6707, 8119, 16591, 20121, 20539, 24357, 49773, 61617, 154261, 315229, 381593, 462783, 945687, 1144779, 7250267, 21750801]

約数ペア:

[(1, 21750801), (3, 7250267), (19, 1144779), (23, 945687), (47, 462783), (57, 381593), (69, 315229), (141, 154261), (353, 61617), (437, 49773), (893, 24357), (1059, 20539), (1081, 20121), (1311, 16591), (2679, 8119), (3243, 6707)]