21257181

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3767}}^1$

素因数の和:3806

約数の個数: 32

約数和(自身を含む): 36172800

約数和(自身を除く): 14915619

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 99, 171, 209, 297, 513, 627, 1881, 3767, 5643, 11301, 33903, 41437, 71573, 101709, 124311, 214719, 372933, 644157, 787303, 1118799, 1932471, 2361909, 7085727, 21257181]

約数ペア:

[(1, 21257181), (3, 7085727), (9, 2361909), (11, 1932471), (19, 1118799), (27, 787303), (33, 644157), (57, 372933), (99, 214719), (171, 124311), (209, 101709), (297, 71573), (513, 41437), (627, 33903), (1881, 11301), (3767, 5643)]