21000918081

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1688041}}^1$

素因数の和:1688097

約数の個数: 32

約数和(自身を含む): 34030926720

約数和(自身を除く): 13030008639

約数列:

[1, 3, 11, 13, 29, 33, 39, 87, 143, 319, 377, 429, 957, 1131, 4147, 12441, 1688041, 5064123, 18568451, 21944533, 48953189, 55705353, 65833599, 146859567, 241389863, 538485079, 636391457, 724169589, 1615455237, 1909174371, 7000306027, 21000918081]

約数ペア:

[(1, 21000918081), (3, 7000306027), (11, 1909174371), (13, 1615455237), (29, 724169589), (33, 636391457), (39, 538485079), (87, 241389863), (143, 146859567), (319, 65833599), (377, 55705353), (429, 48953189), (957, 21944533), (1131, 18568451), (4147, 5064123), (12441, 1688041)]