20520352105

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{1721}}^1\times {\mathrm{216791}}^1$

素因数の和:218528

約数の個数: 16

約数和(自身を含む): 26878739328

約数和(自身を除く): 6358387223

約数列:

[1, 5, 11, 55, 1721, 8605, 18931, 94655, 216791, 1083955, 2384701, 11923505, 373097311, 1865486555, 4104070421, 20520352105]

約数ペア:

[(1, 20520352105), (5, 4104070421), (11, 1865486555), (55, 373097311), (1721, 11923505), (8605, 2384701), (18931, 1083955), (94655, 216791)]