20866905

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27277}}^1$

素因数の和:27305

約数の個数: 24

約数和(自身を含む): 38298312

約数和(自身を除く): 17431407

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27277, 81831, 136385, 245493, 409155, 463709, 1227465, 1391127, 2318545, 4173381, 6955635, 20866905]

約数ペア:

[(1, 20866905), (3, 6955635), (5, 4173381), (9, 2318545), (15, 1391127), (17, 1227465), (45, 463709), (51, 409155), (85, 245493), (153, 136385), (255, 81831), (765, 27277)]