20816404870

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{31069261}}^1$

素因数の和:31069335

約数の個数: 16

約数和(自身を含む): 38028776688

約数和(自身を除く): 17212371818

約数列:

[1, 2, 5, 10, 67, 134, 335, 670, 31069261, 62138522, 155346305, 310692610, 2081640487, 4163280974, 10408202435, 20816404870]

約数ペア:

[(1, 20816404870), (2, 10408202435), (5, 4163280974), (10, 2081640487), (67, 310692610), (134, 155346305), (335, 62138522), (670, 31069261)]