20881389

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{4933}}^1$

素因数の和:5036

約数の個数: 16

約数和(自身を含む): 29840832

約数和(自身を除く): 8959443

約数列:

[1, 3, 17, 51, 83, 249, 1411, 4233, 4933, 14799, 83861, 251583, 409439, 1228317, 6960463, 20881389]

約数ペア:

[(1, 20881389), (3, 6960463), (17, 1228317), (51, 409439), (83, 251583), (249, 83861), (1411, 14799), (4233, 4933)]