21818079

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8689}}^1$

素因数の和:8732

約数の個数: 20

約数和(自身を含む): 33647680

約数和(自身を除く): 11829601

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8689, 26067, 78201, 234603, 269359, 703809, 808077, 2424231, 7272693, 21818079]

約数ペア:

[(1, 21818079), (3, 7272693), (9, 2424231), (27, 808077), (31, 703809), (81, 269359), (93, 234603), (279, 78201), (837, 26067), (2511, 8689)]