81857810

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{190367}}^1$

素因数の和:190417

約数の個数: 16

約数和(自身を含む): 150771456

約数和(自身を除く): 68913646

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 190367, 380734, 951835, 1903670, 8185781, 16371562, 40928905, 81857810]

約数ペア:

[(1, 81857810), (2, 40928905), (5, 16371562), (10, 8185781), (43, 1903670), (86, 951835), (215, 380734), (430, 190367)]