20890078

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{2441}}^1$

素因数の和:2843

約数の個数: 16

約数和(自身を含む): 34285680

約数和(自身を除く): 13395602

約数列:

[1, 2, 11, 22, 389, 778, 2441, 4279, 4882, 8558, 26851, 53702, 949549, 1899098, 10445039, 20890078]

約数ペア:

[(1, 20890078), (2, 10445039), (11, 1899098), (22, 949549), (389, 53702), (778, 26851), (2441, 8558), (4279, 4882)]