18914320

素因数分解:

$2^4\times 5^1\times {\mathrm{236429}}^1$

素因数の和:236442

約数の個数: 20

約数和(自身を含む): 43975980

約数和(自身を除く): 25061660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 236429, 472858, 945716, 1182145, 1891432, 2364290, 3782864, 4728580, 9457160, 18914320]

約数ペア:

[(1, 18914320), (2, 9457160), (4, 4728580), (5, 3782864), (8, 2364290), (10, 1891432), (16, 1182145), (20, 945716), (40, 472858), (80, 236429)]