12821571

素因数分解:

$3^4\times 7^1\times {\mathrm{22613}}^1$

素因数の和:22632

約数の個数: 20

約数和(自身を含む): 21890352

約数和(自身を除く): 9068781

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 22613, 67839, 158291, 203517, 474873, 610551, 1424619, 1831653, 4273857, 12821571]

約数ペア:

[(1, 12821571), (3, 4273857), (7, 1831653), (9, 1424619), (21, 610551), (27, 474873), (63, 203517), (81, 158291), (189, 67839), (567, 22613)]