20411919

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{739}}^1$

素因数の和:793

約数の個数: 40

約数和(自身を含む): 34383360

約数和(自身を除く): 13971441

約数列:

[1, 3, 9, 11, 27, 31, 33, 81, 93, 99, 279, 297, 341, 739, 837, 891, 1023, 2217, 2511, 3069, 6651, 8129, 9207, 19953, 22909, 24387, 27621, 59859, 68727, 73161, 206181, 219483, 251999, 618543, 658449, 755997, 1855629, 2267991, 6803973, 20411919]

約数ペア:

[(1, 20411919), (3, 6803973), (9, 2267991), (11, 1855629), (27, 755997), (31, 658449), (33, 618543), (81, 251999), (93, 219483), (99, 206181), (279, 73161), (297, 68727), (341, 59859), (739, 27621), (837, 24387), (891, 22909), (1023, 19953), (2217, 9207), (2511, 8129), (3069, 6651)]