1215081

素因数分解:

$3^4\times 7^1\times {\mathrm{2143}}^1$

素因数の和:2162

約数の個数: 20

約数和(自身を含む): 2075392

約数和(自身を除く): 860311

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 2143, 6429, 15001, 19287, 45003, 57861, 135009, 173583, 405027, 1215081]

約数ペア:

[(1, 1215081), (3, 405027), (7, 173583), (9, 135009), (21, 57861), (27, 45003), (63, 19287), (81, 15001), (189, 6429), (567, 2143)]