20553790

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28949}}^1$

素因数の和:29027

約数の個数: 16

約数和(自身を含む): 37519200

約数和(自身を除く): 16965410

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 28949, 57898, 144745, 289490, 2055379, 4110758, 10276895, 20553790]

約数ペア:

[(1, 20553790), (2, 10276895), (5, 4110758), (10, 2055379), (71, 289490), (142, 144745), (355, 57898), (710, 28949)]