20843559

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{1217}}^1$

素因数の和:1407

約数の個数: 24

約数和(自身を含む): 33061392

約数和(自身を除く): 12217833

約数列:

[1, 3, 9, 11, 33, 99, 173, 519, 1217, 1557, 1903, 3651, 5709, 10953, 13387, 17127, 40161, 120483, 210541, 631623, 1894869, 2315951, 6947853, 20843559]

約数ペア:

[(1, 20843559), (3, 6947853), (9, 2315951), (11, 1894869), (33, 631623), (99, 210541), (173, 120483), (519, 40161), (1217, 17127), (1557, 13387), (1903, 10953), (3651, 5709)]