20988011

素因数分解:

${\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{443}}^1$

素因数の和:586

約数の個数: 16

約数和(自身を含む): 23656320

約数和(自身を除く): 2668309

約数列:

[1, 11, 59, 73, 443, 649, 803, 4307, 4873, 26137, 32339, 47377, 287507, 355729, 1908001, 20988011]

約数ペア:

[(1, 20988011), (11, 1908001), (59, 355729), (73, 287507), (443, 47377), (649, 32339), (803, 26137), (4307, 4873)]