21438109

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2003}}^1$

素因数の和:2160

約数の個数: 16

約数和(自身を含む): 26933760

約数和(自身を除く): 5495651

約数列:

[1, 7, 11, 77, 139, 973, 1529, 2003, 10703, 14021, 22033, 154231, 278417, 1948919, 3062587, 21438109]

約数ペア:

[(1, 21438109), (7, 3062587), (11, 1948919), (77, 278417), (139, 154231), (973, 22033), (1529, 14021), (2003, 10703)]