20797180

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{7481}}^1$

素因数の和:7629

約数の個数: 24

約数和(自身を含む): 43994160

約数和(自身を除く): 23196980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 7481, 14962, 29924, 37405, 74810, 149620, 1039859, 2079718, 4159436, 5199295, 10398590, 20797180]

約数ペア:

[(1, 20797180), (2, 10398590), (4, 5199295), (5, 4159436), (10, 2079718), (20, 1039859), (139, 149620), (278, 74810), (556, 37405), (695, 29924), (1390, 14962), (2780, 7481)]