20888613

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{491}}^1$

素因数の和:689

約数の個数: 24

約数和(自身を含む): 31468320

約数和(自身を除く): 10579707

約数列:

[1, 3, 9, 29, 87, 163, 261, 489, 491, 1467, 1473, 4419, 4727, 14181, 14239, 42543, 42717, 80033, 128151, 240099, 720297, 2320957, 6962871, 20888613]

約数ペア:

[(1, 20888613), (3, 6962871), (9, 2320957), (29, 720297), (87, 240099), (163, 128151), (261, 80033), (489, 42717), (491, 42543), (1467, 14239), (1473, 14181), (4419, 4727)]