20720997

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{673}}^1$

素因数の和:1001

約数の個数: 24

約数和(自身を含む): 32804928

約数和(自身を除く): 12083931

約数列:

[1, 3, 9, 11, 33, 99, 311, 673, 933, 2019, 2799, 3421, 6057, 7403, 10263, 22209, 30789, 66627, 209303, 627909, 1883727, 2302333, 6906999, 20720997]

約数ペア:

[(1, 20720997), (3, 6906999), (9, 2302333), (11, 1883727), (33, 627909), (99, 209303), (311, 66627), (673, 30789), (933, 22209), (2019, 10263), (2799, 7403), (3421, 6057)]