20989816

素因数分解:

$2^3\times {\mathrm{691}}^1\times {\mathrm{3797}}^1$

素因数の和:4494

約数の個数: 16

約数和(自身を含む): 39423240

約数和(自身を除く): 18433424

約数列:

[1, 2, 4, 8, 691, 1382, 2764, 3797, 5528, 7594, 15188, 30376, 2623727, 5247454, 10494908, 20989816]

約数ペア:

[(1, 20989816), (2, 10494908), (4, 5247454), (8, 2623727), (691, 30376), (1382, 15188), (2764, 7594), (3797, 5528)]