18978376

素因数分解:

$2^3\times {\mathrm{107}}^1\times {\mathrm{22171}}^1$

素因数の和:22284

約数の個数: 16

約数和(自身を含む): 35918640

約数和(自身を除く): 16940264

約数列:

[1, 2, 4, 8, 107, 214, 428, 856, 22171, 44342, 88684, 177368, 2372297, 4744594, 9489188, 18978376]

約数ペア:

[(1, 18978376), (2, 9489188), (4, 4744594), (8, 2372297), (107, 177368), (214, 88684), (428, 44342), (856, 22171)]