20811395

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{839}}^1$

素因数の和:907

約数の個数: 24

約数和(自身を含む): 28153440

約数和(自身を除く): 7342045

約数列:

[1, 5, 11, 41, 55, 121, 205, 451, 605, 839, 2255, 4195, 4961, 9229, 24805, 34399, 46145, 101519, 171995, 378389, 507595, 1891945, 4162279, 20811395]

約数ペア:

[(1, 20811395), (5, 4162279), (11, 1891945), (41, 507595), (55, 378389), (121, 171995), (205, 101519), (451, 46145), (605, 34399), (839, 24805), (2255, 9229), (4195, 4961)]