138820023

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{42727}}^1$

素因数の和:42771

約数の個数: 18

約数和(自身を含む): 211631784

約数和(自身を除く): 72811761

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 42727, 128181, 384543, 811813, 2435439, 7306317, 15424447, 46273341, 138820023]

約数ペア:

[(1, 138820023), (3, 46273341), (9, 15424447), (19, 7306317), (57, 2435439), (171, 811813), (361, 384543), (1083, 128181), (3249, 42727)]