821997

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1$

素因数の和:78

約数の個数: 36

約数和(自身を含む): 1426464

約数和(自身を除く): 604467

約数列:

[1, 3, 9, 11, 19, 23, 33, 57, 69, 99, 171, 207, 209, 253, 361, 437, 627, 759, 1083, 1311, 1881, 2277, 3249, 3933, 3971, 4807, 8303, 11913, 14421, 24909, 35739, 43263, 74727, 91333, 273999, 821997]

約数ペア:

[(1, 821997), (3, 273999), (9, 91333), (11, 74727), (19, 43263), (23, 35739), (33, 24909), (57, 14421), (69, 11913), (99, 8303), (171, 4807), (207, 3971), (209, 3933), (253, 3249), (361, 2277), (437, 1881), (627, 1311), (759, 1083)]