20407585

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{8629}}^1$

素因数の和:8688

約数の個数: 16

約数和(自身を含む): 27339840

約数和(自身を除く): 6932255

約数列:

[1, 5, 11, 43, 55, 215, 473, 2365, 8629, 43145, 94919, 371047, 474595, 1855235, 4081517, 20407585]

約数ペア:

[(1, 20407585), (5, 4081517), (11, 1855235), (43, 474595), (55, 371047), (215, 94919), (473, 43145), (2365, 8629)]