20806445

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1901}}^1$

素因数の和:2116

約数の個数: 16

約数和(自身を含む): 27388800

約数和(自身を除く): 6582355

約数列:

[1, 5, 11, 55, 199, 995, 1901, 2189, 9505, 10945, 20911, 104555, 378299, 1891495, 4161289, 20806445]

約数ペア:

[(1, 20806445), (5, 4161289), (11, 1891495), (55, 378299), (199, 104555), (995, 20911), (1901, 10945), (2189, 9505)]