19182220

素因数分解:

$2^2\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1451}}^1$

素因数の和:2121

約数の個数: 24

約数和(自身を含む): 40371408

約数和(自身を除く): 21189188

約数列:

[1, 2, 4, 5, 10, 20, 661, 1322, 1451, 2644, 2902, 3305, 5804, 6610, 7255, 13220, 14510, 29020, 959111, 1918222, 3836444, 4795555, 9591110, 19182220]

約数ペア:

[(1, 19182220), (2, 9591110), (4, 4795555), (5, 3836444), (10, 1918222), (20, 959111), (661, 29020), (1322, 14510), (1451, 13220), (2644, 7255), (2902, 6610), (3305, 5804)]