20487635

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4919}}^1$

素因数の和:4955

約数の個数: 24

約数和(自身を含む): 30287520

約数和(自身を除く): 9799885

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 245, 595, 833, 4165, 4919, 24595, 34433, 83623, 172165, 241031, 418115, 585361, 1205155, 2926805, 4097527, 20487635]

約数ペア:

[(1, 20487635), (5, 4097527), (7, 2926805), (17, 1205155), (35, 585361), (49, 418115), (85, 241031), (119, 172165), (245, 83623), (595, 34433), (833, 24595), (4165, 4919)]