989235640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{575137}}^1$

素因数の和:575191

約数の個数: 32

約数和(自身を含む): 2277546480

約数和(自身を除く): 1288310840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 575137, 1150274, 2300548, 2875685, 4601096, 5751370, 11502740, 23005480, 24730891, 49461782, 98923564, 123654455, 197847128, 247308910, 494617820, 989235640]

約数ペア:

[(1, 989235640), (2, 494617820), (4, 247308910), (5, 197847128), (8, 123654455), (10, 98923564), (20, 49461782), (40, 24730891), (43, 23005480), (86, 11502740), (172, 5751370), (215, 4601096), (344, 2875685), (430, 2300548), (860, 1150274), (1720, 575137)]