80722360

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10141}}^1$

素因数の和:10351

約数の個数: 32

約数和(自身を含む): 182556000

約数和(自身を除く): 101833640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 10141, 20282, 40564, 50705, 81128, 101410, 202820, 405640, 2018059, 4036118, 8072236, 10090295, 16144472, 20180590, 40361180, 80722360]

約数ペア:

[(1, 80722360), (2, 40361180), (4, 20180590), (5, 16144472), (8, 10090295), (10, 8072236), (20, 4036118), (40, 2018059), (199, 405640), (398, 202820), (796, 101410), (995, 81128), (1592, 50705), (1990, 40564), (3980, 20282), (7960, 10141)]