20805161

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{2003}}^1$

素因数の和:2080

約数の個数: 16

約数和(自身を含む): 24240384

約数和(自身を除く): 3435223

約数列:

[1, 13, 17, 47, 221, 611, 799, 2003, 10387, 26039, 34051, 94141, 442663, 1223833, 1600397, 20805161]

約数ペア:

[(1, 20805161), (13, 1600397), (17, 1223833), (47, 442663), (221, 94141), (611, 34051), (799, 26039), (2003, 10387)]