20845955

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{4517}}^1$

素因数の和:4606

約数の個数: 16

約数和(自身を含む): 27324864

約数和(自身を除く): 6478909

約数列:

[1, 5, 13, 65, 71, 355, 923, 4517, 4615, 22585, 58721, 293605, 320707, 1603535, 4169191, 20845955]

約数ペア:

[(1, 20845955), (5, 4169191), (13, 1603535), (65, 320707), (71, 293605), (355, 58721), (923, 22585), (4517, 4615)]