21000980241

素因数分解:

$3^8\times {\mathrm{3200881}}^1$

素因数の和:3200905

約数の個数: 18

約数和(自身を含む): 31499879762

約数和(自身を除く): 10498899521

約数列:

[1, 3, 9, 27, 81, 243, 729, 2187, 6561, 3200881, 9602643, 28807929, 86423787, 259271361, 777814083, 2333442249, 7000326747, 21000980241]

約数ペア:

[(1, 21000980241), (3, 7000326747), (9, 2333442249), (27, 777814083), (81, 259271361), (243, 86423787), (729, 28807929), (2187, 9602643), (6561, 3200881)]