21643527

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1\times {\mathrm{881}}^1$

素因数の和:1334

約数の個数: 16

約数和(自身を含む): 30481920

約数和(自身を除く): 8838393

約数列:

[1, 3, 19, 57, 431, 881, 1293, 2643, 8189, 16739, 24567, 50217, 379711, 1139133, 7214509, 21643527]

約数ペア:

[(1, 21643527), (3, 7214509), (19, 1139133), (57, 379711), (431, 50217), (881, 24567), (1293, 16739), (2643, 8189)]