20895721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{6311}}^1$

素因数の和:6372

約数の個数: 16

約数和(自身を含む): 26661888

約数和(自身を除く): 5766167

約数列:

[1, 7, 11, 43, 77, 301, 473, 3311, 6311, 44177, 69421, 271373, 485947, 1899611, 2985103, 20895721]

約数ペア:

[(1, 20895721), (7, 2985103), (11, 1899611), (43, 485947), (77, 271373), (301, 69421), (473, 44177), (3311, 6311)]