21000891254

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{4155301}}^1$

素因数の和:4155348

約数の個数: 24

約数和(自身を含む): 37996081488

約数和(自身を除く): 16995190234

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 361, 722, 2527, 5054, 4155301, 8310602, 29087107, 58174214, 78950719, 157901438, 552655033, 1105310066, 1500063661, 3000127322, 10500445627, 21000891254]

約数ペア:

[(1, 21000891254), (2, 10500445627), (7, 3000127322), (14, 1500063661), (19, 1105310066), (38, 552655033), (133, 157901438), (266, 78950719), (361, 58174214), (722, 29087107), (2527, 8310602), (5054, 4155301)]