21991220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47807}}^1$

素因数の和:47839

約数の個数: 24

約数和(自身を含む): 48190464

約数和(自身を除く): 26199244

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 47807, 95614, 191228, 239035, 478070, 956140, 1099561, 2199122, 4398244, 5497805, 10995610, 21991220]

約数ペア:

[(1, 21991220), (2, 10995610), (4, 5497805), (5, 4398244), (10, 2199122), (20, 1099561), (23, 956140), (46, 478070), (92, 239035), (115, 191228), (230, 95614), (460, 47807)]