289075240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{168067}}^1$

素因数の和:168121

約数の個数: 32

約数和(自身を含む): 665549280

約数和(自身を除く): 376474040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 168067, 336134, 672268, 840335, 1344536, 1680670, 3361340, 6722680, 7226881, 14453762, 28907524, 36134405, 57815048, 72268810, 144537620, 289075240]

約数ペア:

[(1, 289075240), (2, 144537620), (4, 72268810), (5, 57815048), (8, 36134405), (10, 28907524), (20, 14453762), (40, 7226881), (43, 6722680), (86, 3361340), (172, 1680670), (215, 1344536), (344, 840335), (430, 672268), (860, 336134), (1720, 168067)]