127982169

素因数分解:

$3^2\times 7^2\times {\mathrm{290209}}^1$

素因数の和:290229

約数の個数: 18

約数和(自身を含む): 215045610

約数和(自身を除く): 87063441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 290209, 870627, 2031463, 2611881, 6094389, 14220241, 18283167, 42660723, 127982169]

約数ペア:

[(1, 127982169), (3, 42660723), (7, 18283167), (9, 14220241), (21, 6094389), (49, 2611881), (63, 2031463), (147, 870627), (441, 290209)]