9786820

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2459}}^1$

素因数の和:2667

約数の個数: 24

約数和(自身を含む): 20664000

約数和(自身を除く): 10877180

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 2459, 3980, 4918, 9836, 12295, 24590, 49180, 489341, 978682, 1957364, 2446705, 4893410, 9786820]

約数ペア:

[(1, 9786820), (2, 4893410), (4, 2446705), (5, 1957364), (10, 978682), (20, 489341), (199, 49180), (398, 24590), (796, 12295), (995, 9836), (1990, 4918), (2459, 3980)]