20666005

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1\times {\mathrm{463}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 25390080

約数和(自身を除く): 4724075

約数列:

[1, 5, 79, 113, 395, 463, 565, 2315, 8927, 36577, 44635, 52319, 182885, 261595, 4133201, 20666005]

約数ペア:

[(1, 20666005), (5, 4133201), (79, 261595), (113, 182885), (395, 52319), (463, 44635), (565, 36577), (2315, 8927)]