21012485

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{8737}}^1$

素因数の和:8792

約数の個数: 16

約数和(自身を含む): 27891696

約数和(自身を除く): 6879211

約数列:

[1, 5, 13, 37, 65, 185, 481, 2405, 8737, 43685, 113581, 323269, 567905, 1616345, 4202497, 21012485]

約数ペア:

[(1, 21012485), (5, 4202497), (13, 1616345), (37, 567905), (65, 323269), (185, 113581), (481, 43685), (2405, 8737)]