20799988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{3011}}^1$

素因数の和:3183

約数の個数: 24

約数和(自身を含む): 39975264

約数和(自身を除く): 19175276

約数列:

[1, 2, 4, 11, 22, 44, 157, 314, 628, 1727, 3011, 3454, 6022, 6908, 12044, 33121, 66242, 132484, 472727, 945454, 1890908, 5199997, 10399994, 20799988]

約数ペア:

[(1, 20799988), (2, 10399994), (4, 5199997), (11, 1890908), (22, 945454), (44, 472727), (157, 132484), (314, 66242), (628, 33121), (1727, 12044), (3011, 6908), (3454, 6022)]