12705903

素因数分解:

$3^4\times 7^1\times {\mathrm{22409}}^1$

素因数の和:22428

約数の個数: 20

約数和(自身を含む): 21692880

約数和(自身を除く): 8986977

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 22409, 67227, 156863, 201681, 470589, 605043, 1411767, 1815129, 4235301, 12705903]

約数ペア:

[(1, 12705903), (3, 4235301), (7, 1815129), (9, 1411767), (21, 605043), (27, 470589), (63, 201681), (81, 156863), (189, 67227), (567, 22409)]