20542347

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7583}}^1$

素因数の和:7639

約数の個数: 24

約数和(自身を含む): 34704384

約数和(自身を除く): 14162037

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 7583, 22749, 53081, 68247, 159243, 326069, 477729, 978207, 2282483, 2934621, 6847449, 20542347]

約数ペア:

[(1, 20542347), (3, 6847449), (7, 2934621), (9, 2282483), (21, 978207), (43, 477729), (63, 326069), (129, 159243), (301, 68247), (387, 53081), (903, 22749), (2709, 7583)]