21288663

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{23893}}^1$

素因数の和:23916

約数の個数: 20

約数和(自身を含む): 34694088

約数和(自身を除く): 13405425

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 297, 891, 23893, 71679, 215037, 262823, 645111, 788469, 1935333, 2365407, 7096221, 21288663]

約数ペア:

[(1, 21288663), (3, 7096221), (9, 2365407), (11, 1935333), (27, 788469), (33, 645111), (81, 262823), (99, 215037), (297, 71679), (891, 23893)]