20194335640

素因数分解:

$2^3\times 5^1\times {\mathrm{1279}}^1\times {\mathrm{394729}}^1$

素因数の和:396019

約数の個数: 32

約数和(自身を含む): 45472896000

約数和(自身を除く): 25278560360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1279, 2558, 5116, 6395, 10232, 12790, 25580, 51160, 394729, 789458, 1578916, 1973645, 3157832, 3947290, 7894580, 15789160, 504858391, 1009716782, 2019433564, 2524291955, 4038867128, 5048583910, 10097167820, 20194335640]

約数ペア:

[(1, 20194335640), (2, 10097167820), (4, 5048583910), (5, 4038867128), (8, 2524291955), (10, 2019433564), (20, 1009716782), (40, 504858391), (1279, 15789160), (2558, 7894580), (5116, 3947290), (6395, 3157832), (10232, 1973645), (12790, 1578916), (25580, 789458), (51160, 394729)]