21712385

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1\times {\mathrm{463}}^1$

素因数の和:664

約数の個数: 16

約数和(自身を含む): 26659584

約数和(自身を除く): 4947199

約数列:

[1, 5, 83, 113, 415, 463, 565, 2315, 9379, 38429, 46895, 52319, 192145, 261595, 4342477, 21712385]

約数ペア:

[(1, 21712385), (5, 4342477), (83, 261595), (113, 192145), (415, 52319), (463, 46895), (565, 38429), (2315, 9379)]