221972401

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{313}}^1\times {\mathrm{353}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 266107464

約数和(自身を除く): 44135063

約数列:

[1, 7, 41, 49, 287, 313, 353, 2009, 2191, 2471, 12833, 14473, 15337, 17297, 89831, 101311, 110489, 628817, 709177, 773423, 4530049, 5413961, 31710343, 221972401]

約数ペア:

[(1, 221972401), (7, 31710343), (41, 5413961), (49, 4530049), (287, 773423), (313, 709177), (353, 628817), (2009, 110489), (2191, 101311), (2471, 89831), (12833, 17297), (14473, 15337)]