20987150859

素因数分解:

$3^2\times {\mathrm{13807}}^1\times {\mathrm{168893}}^1$

素因数の和:182706

約数の個数: 12

約数和(自身を含む): 30317148576

約数和(自身を除く): 9329997717

約数列:

[1, 3, 9, 13807, 41421, 124263, 168893, 506679, 1520037, 2331905651, 6995716953, 20987150859]

約数ペア:

[(1, 20987150859), (3, 6995716953), (9, 2331905651), (13807, 1520037), (41421, 506679), (124263, 168893)]