12821247

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{9311}}^1$

素因数の和:9340

約数の個数: 20

約数和(自身を含む): 20281536

約数和(自身を除く): 7460289

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 9311, 27933, 83799, 158287, 251397, 474861, 754191, 1424583, 4273749, 12821247]

約数ペア:

[(1, 12821247), (3, 4273749), (9, 1424583), (17, 754191), (27, 474861), (51, 251397), (81, 158287), (153, 83799), (459, 27933), (1377, 9311)]