81912842

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^2$

素因数の和:542

約数の個数: 24

約数和(自身を含む): 136523232

約数和(自身を除く): 54610390

約数列:

[1, 2, 11, 22, 71, 142, 229, 458, 781, 1562, 2519, 5038, 16259, 32518, 52441, 104882, 178849, 357698, 576851, 1153702, 3723311, 7446622, 40956421, 81912842]

約数ペア:

[(1, 81912842), (2, 40956421), (11, 7446622), (22, 3723311), (71, 1153702), (142, 576851), (229, 357698), (458, 178849), (781, 104882), (1562, 52441), (2519, 32518), (5038, 16259)]