20389647

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{401}}^1\times {\mathrm{997}}^1$

素因数の和:1418

約数の個数: 16

約数和(自身を含む): 28886112

約数和(自身を除く): 8496465

約数列:

[1, 3, 17, 51, 401, 997, 1203, 2991, 6817, 16949, 20451, 50847, 399797, 1199391, 6796549, 20389647]

約数ペア:

[(1, 20389647), (3, 6796549), (17, 1199391), (51, 399797), (401, 50847), (997, 20451), (1203, 16949), (2991, 6817)]