21068404

素因数分解:

$2^2\times 7^1\times {\mathrm{263}}^1\times {\mathrm{2861}}^1$

素因数の和:3135

約数の個数: 24

約数和(自身を含む): 42311808

約数和(自身を除く): 21243404

約数列:

[1, 2, 4, 7, 14, 28, 263, 526, 1052, 1841, 2861, 3682, 5722, 7364, 11444, 20027, 40054, 80108, 752443, 1504886, 3009772, 5267101, 10534202, 21068404]

約数ペア:

[(1, 21068404), (2, 10534202), (4, 5267101), (7, 3009772), (14, 1504886), (28, 752443), (263, 80108), (526, 40054), (1052, 20027), (1841, 11444), (2861, 7364), (3682, 5722)]