20777911

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{5507}}^1$

素因数の和:5539

約数の個数: 16

約数和(自身を含む): 26438400

約数和(自身を除く): 5660489

約数列:

[1, 7, 11, 49, 77, 343, 539, 3773, 5507, 38549, 60577, 269843, 424039, 1888901, 2968273, 20777911]

約数ペア:

[(1, 20777911), (7, 2968273), (11, 1888901), (49, 424039), (77, 269843), (343, 60577), (539, 38549), (3773, 5507)]