18911288

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{691}}^1$

素因数の和:1019

約数の個数: 32

約数和(自身を含む): 38862720

約数和(自身を除く): 19951432

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 311, 622, 691, 1244, 1382, 2488, 2764, 3421, 5528, 6842, 7601, 13684, 15202, 27368, 30404, 60808, 214901, 429802, 859604, 1719208, 2363911, 4727822, 9455644, 18911288]

約数ペア:

[(1, 18911288), (2, 9455644), (4, 4727822), (8, 2363911), (11, 1719208), (22, 859604), (44, 429802), (88, 214901), (311, 60808), (622, 30404), (691, 27368), (1244, 15202), (1382, 13684), (2488, 7601), (2764, 6842), (3421, 5528)]