318435640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{185137}}^1$

素因数の和:185191

約数の個数: 32

約数和(自身を含む): 733146480

約数和(自身を除く): 414710840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 185137, 370274, 740548, 925685, 1481096, 1851370, 3702740, 7405480, 7960891, 15921782, 31843564, 39804455, 63687128, 79608910, 159217820, 318435640]

約数ペア:

[(1, 318435640), (2, 159217820), (4, 79608910), (5, 63687128), (8, 39804455), (10, 31843564), (20, 15921782), (40, 7960891), (43, 7405480), (86, 3702740), (172, 1851370), (215, 1481096), (344, 925685), (430, 740548), (860, 370274), (1720, 185137)]