20805169

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1721}}^1$

素因数の和:1896

約数の個数: 16

約数和(自身を含む): 26119296

約数和(自身を除く): 5314127

約数列:

[1, 7, 11, 77, 157, 1099, 1721, 1727, 12047, 12089, 18931, 132517, 270197, 1891379, 2972167, 20805169]

約数ペア:

[(1, 20805169), (7, 2972167), (11, 1891379), (77, 270197), (157, 132517), (1099, 18931), (1721, 12089), (1727, 12047)]