428247

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{311}}^1$

素因数の和:340

約数の個数: 20

約数和(自身を含む): 679536

約数和(自身を除く): 251289

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 311, 459, 933, 1377, 2799, 5287, 8397, 15861, 25191, 47583, 142749, 428247]

約数ペア:

[(1, 428247), (3, 142749), (9, 47583), (17, 25191), (27, 15861), (51, 8397), (81, 5287), (153, 2799), (311, 1377), (459, 933)]