21043233

素因数分解:

$3^4\times {\mathrm{239}}^1\times {\mathrm{1087}}^1$

素因数の和:1338

約数の個数: 20

約数和(自身を含む): 31595520

約数和(自身を除く): 10552287

約数列:

[1, 3, 9, 27, 81, 239, 717, 1087, 2151, 3261, 6453, 9783, 19359, 29349, 88047, 259793, 779379, 2338137, 7014411, 21043233]

約数ペア:

[(1, 21043233), (3, 7014411), (9, 2338137), (27, 779379), (81, 259793), (239, 88047), (717, 29349), (1087, 19359), (2151, 9783), (3261, 6453)]