138888939

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{47581}}^1$

素因数の和:47730

約数の個数: 16

約数和(自身を含む): 213167360

約数和(自身を除く): 74278421

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 47581, 142743, 333067, 999201, 6613759, 19841277, 46296313, 138888939]

約数ペア:

[(1, 138888939), (3, 46296313), (7, 19841277), (21, 6613759), (139, 999201), (417, 333067), (973, 142743), (2919, 47581)]