20997485

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:700

約数の個数: 16

約数和(自身を含む): 25920000

約数和(自身を除く): 4922515

約数列:

[1, 5, 47, 199, 235, 449, 995, 2245, 9353, 21103, 46765, 89351, 105515, 446755, 4199497, 20997485]

約数ペア:

[(1, 20997485), (5, 4199497), (47, 446755), (199, 105515), (235, 89351), (449, 46765), (995, 21103), (2245, 9353)]