20128054

素因数分解:

$2^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1\times {\mathrm{491}}^1$

素因数の和:795

約数の個数: 16

約数和(自身を含む): 30700800

約数和(自身を除く): 10572746

約数列:

[1, 2, 103, 199, 206, 398, 491, 982, 20497, 40994, 50573, 97709, 101146, 195418, 10064027, 20128054]

約数ペア:

[(1, 20128054), (2, 10064027), (103, 195418), (199, 101146), (206, 97709), (398, 50573), (491, 40994), (982, 20497)]