20523771

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{293}}^1$

素因数の和:523

約数の個数: 24

約数和(自身を含む): 30606576

約数和(自身を除く): 10082805

約数列:

[1, 3, 9, 43, 129, 181, 293, 387, 543, 879, 1629, 2637, 7783, 12599, 23349, 37797, 53033, 70047, 113391, 159099, 477297, 2280419, 6841257, 20523771]

約数ペア:

[(1, 20523771), (3, 6841257), (9, 2280419), (43, 477297), (129, 159099), (181, 113391), (293, 70047), (387, 53033), (543, 37797), (879, 23349), (1629, 12599), (2637, 7783)]