20309121

素因数分解:

$3^2\times 7^1\times {\mathrm{479}}^1\times {\mathrm{673}}^1$

素因数の和:1165

約数の個数: 24

約数和(自身を含む): 33646080

約数和(自身を除く): 13336959

約数列:

[1, 3, 7, 9, 21, 63, 479, 673, 1437, 2019, 3353, 4311, 4711, 6057, 10059, 14133, 30177, 42399, 322367, 967101, 2256569, 2901303, 6769707, 20309121]

約数ペア:

[(1, 20309121), (3, 6769707), (7, 2901303), (9, 2256569), (21, 967101), (63, 322367), (479, 42399), (673, 30177), (1437, 14133), (2019, 10059), (3353, 6057), (4311, 4711)]