19911224

素因数分解:

$2^3\times {\mathrm{223}}^1\times {\mathrm{11161}}^1$

素因数の和:11390

約数の個数: 16

約数和(自身を含む): 37504320

約数和(自身を除く): 17593096

約数列:

[1, 2, 4, 8, 223, 446, 892, 1784, 11161, 22322, 44644, 89288, 2488903, 4977806, 9955612, 19911224]

約数ペア:

[(1, 19911224), (2, 9955612), (4, 4977806), (8, 2488903), (223, 89288), (446, 44644), (892, 22322), (1784, 11161)]