20796993

素因数分解:

$3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{853}}^1$

素因数の和:915

約数の個数: 40

約数和(自身を含む): 36373568

約数和(自身を除く): 15576575

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 301, 387, 567, 853, 903, 1161, 2559, 2709, 3483, 5971, 7677, 8127, 17913, 23031, 24381, 36679, 53739, 69093, 110037, 161217, 256753, 330111, 483651, 770259, 990333, 2310777, 2970999, 6932331, 20796993]

約数ペア:

[(1, 20796993), (3, 6932331), (7, 2970999), (9, 2310777), (21, 990333), (27, 770259), (43, 483651), (63, 330111), (81, 256753), (129, 161217), (189, 110037), (301, 69093), (387, 53739), (567, 36679), (853, 24381), (903, 23031), (1161, 17913), (2559, 8127), (2709, 7677), (3483, 5971)]