20994842

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13441}}^1$

素因数の和:13525

約数の個数: 16

約数和(自身を含む): 34841664

約数和(自身を除く): 13846822

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 13441, 26882, 147851, 295702, 954311, 1908622, 10497421, 20994842]

約数ペア:

[(1, 20994842), (2, 10497421), (11, 1908622), (22, 954311), (71, 295702), (142, 147851), (781, 26882), (1562, 13441)]