12760821

素因数分解:

$3^4\times {\mathrm{257}}^1\times {\mathrm{613}}^1$

素因数の和:882

約数の個数: 20

約数和(自身を含む): 19167852

約数和(自身を除く): 6407031

約数列:

[1, 3, 9, 27, 81, 257, 613, 771, 1839, 2313, 5517, 6939, 16551, 20817, 49653, 157541, 472623, 1417869, 4253607, 12760821]

約数ペア:

[(1, 12760821), (3, 4253607), (9, 1417869), (27, 472623), (81, 157541), (257, 49653), (613, 20817), (771, 16551), (1839, 6939), (2313, 5517)]