21000398531

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{1279}}^1\times {\mathrm{33037}}^1$

素因数の和:34394

約数の個数: 16

約数和(自身を含む): 24358256640

約数和(自身を除く): 3357858109

約数列:

[1, 7, 71, 497, 1279, 8953, 33037, 90809, 231259, 635663, 2345627, 16419389, 42254323, 295780261, 3000056933, 21000398531]

約数ペア:

[(1, 21000398531), (7, 3000056933), (71, 295780261), (497, 42254323), (1279, 16419389), (8953, 2345627), (33037, 635663), (90809, 231259)]