20881388

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{677}}^1\times {\mathrm{701}}^1$

素因数の和:1393

約数の個数: 24

約数和(自身を含む): 39980304

約数和(自身を除く): 19098916

約数列:

[1, 2, 4, 11, 22, 44, 677, 701, 1354, 1402, 2708, 2804, 7447, 7711, 14894, 15422, 29788, 30844, 474577, 949154, 1898308, 5220347, 10440694, 20881388]

約数ペア:

[(1, 20881388), (2, 10440694), (4, 5220347), (11, 1898308), (22, 949154), (44, 474577), (677, 30844), (701, 29788), (1354, 15422), (1402, 14894), (2708, 7711), (2804, 7447)]