21559349

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7877}}^1$

素因数の和:7924

約数の個数: 16

約数和(自身を含む): 27226368

約数和(自身を除く): 5667019

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7877, 55139, 133909, 181171, 937363, 1268197, 3079907, 21559349]

約数ペア:

[(1, 21559349), (7, 3079907), (17, 1268197), (23, 937363), (119, 181171), (161, 133909), (391, 55139), (2737, 7877)]