20709997

素因数分解:

$7^3\times {\mathrm{11}}^2\times {\mathrm{499}}^1$

素因数の和:542

約数の個数: 24

約数和(自身を含む): 26600000

約数和(自身を除く): 5890003

約数列:

[1, 7, 11, 49, 77, 121, 343, 499, 539, 847, 3493, 3773, 5489, 5929, 24451, 38423, 41503, 60379, 171157, 268961, 422653, 1882727, 2958571, 20709997]

約数ペア:

[(1, 20709997), (7, 2958571), (11, 1882727), (49, 422653), (77, 268961), (121, 171157), (343, 60379), (499, 41503), (539, 38423), (847, 24451), (3493, 5929), (3773, 5489)]