20705290

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{90023}}^1$

素因数の和:90053

約数の個数: 16

約数和(自身を含む): 38890368

約数和(自身を除く): 18185078

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 90023, 180046, 450115, 900230, 2070529, 4141058, 10352645, 20705290]

約数ペア:

[(1, 20705290), (2, 10352645), (5, 4141058), (10, 2070529), (23, 900230), (46, 450115), (115, 180046), (230, 90023)]