20389059

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{191}}^1\times {\mathrm{409}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 30700800

約数和(自身を除く): 10311741

約数列:

[1, 3, 9, 29, 87, 191, 261, 409, 573, 1227, 1719, 3681, 5539, 11861, 16617, 35583, 49851, 78119, 106749, 234357, 703071, 2265451, 6796353, 20389059]

約数ペア:

[(1, 20389059), (3, 6796353), (9, 2265451), (29, 703071), (87, 234357), (191, 106749), (261, 78119), (409, 49851), (573, 35583), (1227, 16617), (1719, 11861), (3681, 5539)]