20399919

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{7211}}^1$

素因数の和:7278

約数の個数: 16

約数和(自身を含む): 29078784

約数和(自身を除く): 8678865

約数列:

[1, 3, 23, 41, 69, 123, 943, 2829, 7211, 21633, 165853, 295651, 497559, 886953, 6799973, 20399919]

約数ペア:

[(1, 20399919), (3, 6799973), (23, 886953), (41, 497559), (69, 295651), (123, 165853), (943, 21633), (2829, 7211)]