20439663

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^2$

素因数の和:235

約数の個数: 24

約数和(自身を含む): 29453952

約数和(自身を除く): 9014289

約数列:

[1, 3, 23, 43, 69, 83, 129, 249, 989, 1909, 2967, 3569, 5727, 6889, 10707, 20667, 82087, 158447, 246261, 296227, 475341, 888681, 6813221, 20439663]

約数ペア:

[(1, 20439663), (3, 6813221), (23, 888681), (43, 475341), (69, 296227), (83, 246261), (129, 158447), (249, 82087), (989, 20667), (1909, 10707), (2967, 6889), (3569, 5727)]