20940686

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{25981}}^1$

素因数の和:26027

約数の個数: 16

約数和(自身を含む): 34919808

約数和(自身を除く): 13979122

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 25981, 51962, 337753, 675506, 805411, 1610822, 10470343, 20940686]

約数ペア:

[(1, 20940686), (2, 10470343), (13, 1610822), (26, 805411), (31, 675506), (62, 337753), (403, 51962), (806, 25981)]