21620008

素因数分解:

$2^3\times {\mathrm{691}}^1\times {\mathrm{3911}}^1$

素因数の和:4608

約数の個数: 16

約数和(自身を含む): 40606560

約数和(自身を除く): 18986552

約数列:

[1, 2, 4, 8, 691, 1382, 2764, 3911, 5528, 7822, 15644, 31288, 2702501, 5405002, 10810004, 21620008]

約数ペア:

[(1, 21620008), (2, 10810004), (4, 5405002), (8, 2702501), (691, 31288), (1382, 15644), (2764, 7822), (3911, 5528)]