21006167

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{643}}^1$

素因数の和:1022

約数の個数: 16

約数和(自身を含む): 25966080

約数和(自身を除く): 4959913

約数列:

[1, 7, 13, 91, 359, 643, 2513, 4501, 4667, 8359, 32669, 58513, 230837, 1615859, 3000881, 21006167]

約数ペア:

[(1, 21006167), (7, 3000881), (13, 1615859), (91, 230837), (359, 58513), (643, 32669), (2513, 8359), (4501, 4667)]