19995404

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2689}}^1$

素因数の和:2730

約数の個数: 36

約数和(自身を含む): 41350680

約数和(自身を除く): 21355276

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 169, 286, 338, 572, 676, 1859, 2689, 3718, 5378, 7436, 10756, 29579, 34957, 59158, 69914, 118316, 139828, 384527, 454441, 769054, 908882, 1538108, 1817764, 4998851, 9997702, 19995404]

約数ペア:

[(1, 19995404), (2, 9997702), (4, 4998851), (11, 1817764), (13, 1538108), (22, 908882), (26, 769054), (44, 454441), (52, 384527), (143, 139828), (169, 118316), (286, 69914), (338, 59158), (572, 34957), (676, 29579), (1859, 10756), (2689, 7436), (3718, 5378)]