21504753

素因数分解:

$3^2\times {\mathrm{107}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 31775328

約数和(自身を除く): 10270575

約数列:

[1, 3, 9, 107, 137, 163, 321, 411, 489, 963, 1233, 1467, 14659, 17441, 22331, 43977, 52323, 66993, 131931, 156969, 200979, 2389417, 7168251, 21504753]

約数ペア:

[(1, 21504753), (3, 7168251), (9, 2389417), (107, 200979), (137, 156969), (163, 131931), (321, 66993), (411, 52323), (489, 43977), (963, 22331), (1233, 17441), (1467, 14659)]