20391147

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11161}}^1$

素因数の和:11203

約数の個数: 24

約数和(自身を含む): 34825440

約数和(自身を除く): 14434293

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11161, 33483, 78127, 100449, 234381, 323669, 703143, 971007, 2265683, 2913021, 6797049, 20391147]

約数ペア:

[(1, 20391147), (3, 6797049), (7, 2913021), (9, 2265683), (21, 971007), (29, 703143), (63, 323669), (87, 234381), (203, 100449), (261, 78127), (609, 33483), (1827, 11161)]