2020121855

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{128221}}^1$

素因数の和:128386

約数の個数: 16

約数和(自身を含む): 2548027584

約数和(自身を除く): 527905729

約数列:

[1, 5, 23, 115, 137, 685, 3151, 15755, 128221, 641105, 2949083, 14745415, 17566277, 87831385, 404024371, 2020121855]

約数ペア:

[(1, 2020121855), (5, 404024371), (23, 87831385), (115, 17566277), (137, 14745415), (685, 2949083), (3151, 641105), (15755, 128221)]