821907

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:224

約数の個数: 20

約数和(自身を含む): 1253560

約数和(自身を除く): 431653

約数列:

[1, 3, 9, 27, 73, 81, 139, 219, 417, 657, 1251, 1971, 3753, 5913, 10147, 11259, 30441, 91323, 273969, 821907]

約数ペア:

[(1, 821907), (3, 273969), (9, 91323), (27, 30441), (73, 11259), (81, 10147), (139, 5913), (219, 3753), (417, 1971), (657, 1251)]