20982321

素因数分解:

$3^5\times {\mathrm{79}}^1\times {\mathrm{1093}}^1$

素因数の和:1187

約数の個数: 24

約数和(自身を含む): 31857280

約数和(自身を除く): 10874959

約数列:

[1, 3, 9, 27, 79, 81, 237, 243, 711, 1093, 2133, 3279, 6399, 9837, 19197, 29511, 86347, 88533, 259041, 265599, 777123, 2331369, 6994107, 20982321]

約数ペア:

[(1, 20982321), (3, 6994107), (9, 2331369), (27, 777123), (79, 265599), (81, 259041), (237, 88533), (243, 86347), (711, 29511), (1093, 19197), (2133, 9837), (3279, 6399)]