21385256

素因数分解:

$2^3\times {\mathrm{1237}}^1\times {\mathrm{2161}}^1$

素因数の和:3404

約数の個数: 16

約数和(自身を含む): 40148340

約数和(自身を除く): 18763084

約数列:

[1, 2, 4, 8, 1237, 2161, 2474, 4322, 4948, 8644, 9896, 17288, 2673157, 5346314, 10692628, 21385256]

約数ペア:

[(1, 21385256), (2, 10692628), (4, 5346314), (8, 2673157), (1237, 17288), (2161, 9896), (2474, 8644), (4322, 4948)]