20512128988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{394464019}}^1$

素因数の和:394464036

約数の個数: 12

約数和(自身を含む): 38657473960

約数和(自身を除く): 18145344972

約数列:

[1, 2, 4, 13, 26, 52, 394464019, 788928038, 1577856076, 5128032247, 10256064494, 20512128988]

約数ペア:

[(1, 20512128988), (2, 10256064494), (4, 5128032247), (13, 1577856076), (26, 788928038), (52, 394464019)]