20688878

素因数分解:

$2^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{1973}}^1$

素因数の和:2096

約数の個数: 24

約数和(自身を含む): 36455832

約数和(自身を除く): 15766954

約数列:

[1, 2, 7, 14, 49, 98, 107, 214, 749, 1498, 1973, 3946, 5243, 10486, 13811, 27622, 96677, 193354, 211111, 422222, 1477777, 2955554, 10344439, 20688878]

約数ペア:

[(1, 20688878), (2, 10344439), (7, 2955554), (14, 1477777), (49, 422222), (98, 211111), (107, 193354), (214, 96677), (749, 27622), (1498, 13811), (1973, 10486), (3946, 5243)]