21906440

素因数分解:

$2^3\times 5^1\times {\mathrm{547661}}^1$

素因数の和:547672

約数の個数: 16

約数和(自身を含む): 49289580

約数和(自身を除く): 27383140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547661, 1095322, 2190644, 2738305, 4381288, 5476610, 10953220, 21906440]

約数ペア:

[(1, 21906440), (2, 10953220), (4, 5476610), (5, 4381288), (8, 2738305), (10, 2190644), (20, 1095322), (40, 547661)]