20811956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{1429}}^1$

素因数の和:1775

約数の個数: 24

約数和(自身を含む): 39879840

約数和(自身を除く): 19067884

約数列:

[1, 2, 4, 11, 22, 44, 331, 662, 1324, 1429, 2858, 3641, 5716, 7282, 14564, 15719, 31438, 62876, 472999, 945998, 1891996, 5202989, 10405978, 20811956]

約数ペア:

[(1, 20811956), (2, 10405978), (4, 5202989), (11, 1891996), (22, 945998), (44, 472999), (331, 62876), (662, 31438), (1324, 15719), (1429, 14564), (2858, 7282), (3641, 5716)]