20620855

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:554

約数の個数: 16

約数和(自身を含む): 25272000

約数和(自身を除く): 4651145

約数列:

[1, 5, 89, 149, 311, 445, 745, 1555, 13261, 27679, 46339, 66305, 138395, 231695, 4124171, 20620855]

約数ペア:

[(1, 20620855), (5, 4124171), (89, 231695), (149, 138395), (311, 66305), (445, 46339), (745, 27679), (1555, 13261)]