21084556

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{997}}^1$

素因数の和:1329

約数の個数: 24

約数和(自身を含む): 39233376

約数和(自身を除く): 18148820

約数列:

[1, 2, 4, 17, 34, 68, 311, 622, 997, 1244, 1994, 3988, 5287, 10574, 16949, 21148, 33898, 67796, 310067, 620134, 1240268, 5271139, 10542278, 21084556]

約数ペア:

[(1, 21084556), (2, 10542278), (4, 5271139), (17, 1240268), (34, 620134), (68, 310067), (311, 67796), (622, 33898), (997, 21148), (1244, 16949), (1994, 10574), (3988, 5287)]