20816728

素因数分解:

$2^3\times {\mathrm{1303}}^1\times {\mathrm{1997}}^1$

素因数の和:3306

約数の個数: 16

約数和(自身を含む): 39080880

約数和(自身を除く): 18264152

約数列:

[1, 2, 4, 8, 1303, 1997, 2606, 3994, 5212, 7988, 10424, 15976, 2602091, 5204182, 10408364, 20816728]

約数ペア:

[(1, 20816728), (2, 10408364), (4, 5204182), (8, 2602091), (1303, 15976), (1997, 10424), (2606, 7988), (3994, 5212)]