20359339

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{43}}^2$

素因数の和:128

約数の個数: 36

約数和(自身を含む): 28198128

約数和(自身を除く): 7838789

約数列:

[1, 7, 11, 13, 43, 77, 91, 121, 143, 301, 473, 559, 847, 1001, 1573, 1849, 3311, 3913, 5203, 6149, 11011, 12943, 20339, 24037, 36421, 43043, 67639, 142373, 168259, 223729, 264407, 473473, 1566103, 1850849, 2908477, 20359339]

約数ペア:

[(1, 20359339), (7, 2908477), (11, 1850849), (13, 1566103), (43, 473473), (77, 264407), (91, 223729), (121, 168259), (143, 142373), (301, 67639), (473, 43043), (559, 36421), (847, 24037), (1001, 20339), (1573, 12943), (1849, 11011), (3311, 6149), (3913, 5203)]