20865719

素因数分解:

$7^3\times {\mathrm{127}}^1\times {\mathrm{479}}^1$

素因数の和:627

約数の個数: 16

約数和(自身を含む): 24576000

約数和(自身を除く): 3710281

約数列:

[1, 7, 49, 127, 343, 479, 889, 3353, 6223, 23471, 43561, 60833, 164297, 425831, 2980817, 20865719]

約数ペア:

[(1, 20865719), (7, 2980817), (49, 425831), (127, 164297), (343, 60833), (479, 43561), (889, 23471), (3353, 6223)]