78717821

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{20117}}^1$

素因数の和:20180

約数の個数: 16

約数和(自身を含む): 99141504

約数和(自身を除く): 20423683

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 20117, 140819, 261521, 865031, 1830647, 6055217, 11245403, 78717821]

約数ペア:

[(1, 78717821), (7, 11245403), (13, 6055217), (43, 1830647), (91, 865031), (301, 261521), (559, 140819), (3913, 20117)]