20681811

素因数分解:

$3^4\times {\mathrm{311}}^1\times {\mathrm{821}}^1$

素因数の和:1144

約数の個数: 20

約数和(自身を含む): 31032144

約数和(自身を除く): 10350333

約数列:

[1, 3, 9, 27, 81, 311, 821, 933, 2463, 2799, 7389, 8397, 22167, 25191, 66501, 255331, 765993, 2297979, 6893937, 20681811]

約数ペア:

[(1, 20681811), (3, 6893937), (9, 2297979), (27, 765993), (81, 255331), (311, 66501), (821, 25191), (933, 22167), (2463, 8397), (2799, 7389)]