235640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:191

約数の個数: 32

約数和(自身を含む): 546480

約数和(自身を除く): 310840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 137, 172, 215, 274, 344, 430, 548, 685, 860, 1096, 1370, 1720, 2740, 5480, 5891, 11782, 23564, 29455, 47128, 58910, 117820, 235640]

約数ペア:

[(1, 235640), (2, 117820), (4, 58910), (5, 47128), (8, 29455), (10, 23564), (20, 11782), (40, 5891), (43, 5480), (86, 2740), (137, 1720), (172, 1370), (215, 1096), (274, 860), (344, 685), (430, 548)]