21089593

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{761}}^1$

素因数の和:912

約数の個数: 16

約数和(自身を含む): 25017984

約数和(自身を除く): 3928391

約数列:

[1, 7, 37, 107, 259, 749, 761, 3959, 5327, 27713, 28157, 81427, 197099, 569989, 3012799, 21089593]

約数ペア:

[(1, 21089593), (7, 3012799), (37, 569989), (107, 197099), (259, 81427), (749, 28157), (761, 27713), (3959, 5327)]