21009027

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{2707}}^1$

素因数の和:2922

約数の個数: 16

約数和(自身を含む): 30329600

約数和(自身を除く): 9320573

約数列:

[1, 3, 13, 39, 199, 597, 2587, 2707, 7761, 8121, 35191, 105573, 538693, 1616079, 7003009, 21009027]

約数ペア:

[(1, 21009027), (3, 7003009), (13, 1616079), (39, 538693), (199, 105573), (597, 35191), (2587, 8121), (2707, 7761)]