20291817

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{311}}^1$

素因数の和:573

約数の個数: 32

約数和(自身を含む): 33546240

約数和(自身を除く): 13254423

約数列:

[1, 3, 7, 13, 21, 39, 91, 239, 273, 311, 717, 933, 1673, 2177, 3107, 4043, 5019, 6531, 9321, 12129, 21749, 28301, 65247, 74329, 84903, 222987, 520303, 966277, 1560909, 2898831, 6763939, 20291817]

約数ペア:

[(1, 20291817), (3, 6763939), (7, 2898831), (13, 1560909), (21, 966277), (39, 520303), (91, 222987), (239, 84903), (273, 74329), (311, 65247), (717, 28301), (933, 21749), (1673, 12129), (2177, 9321), (3107, 6531), (4043, 5019)]