20115621

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8011}}^1$

素因数の和:8054

約数の個数: 20

約数和(自身を含む): 31022464

約数和(自身を除く): 10906843

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8011, 24033, 72099, 216297, 248341, 648891, 745023, 2235069, 6705207, 20115621]

約数ペア:

[(1, 20115621), (3, 6705207), (9, 2235069), (27, 745023), (31, 648891), (81, 248341), (93, 216297), (279, 72099), (837, 24033), (2511, 8011)]