28257417

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{20521}}^1$

素因数の和:20550

約数の個数: 20

約数和(自身を含む): 44696916

約数和(自身を除く): 16439499

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 20521, 61563, 184689, 348857, 554067, 1046571, 1662201, 3139713, 9419139, 28257417]

約数ペア:

[(1, 28257417), (3, 9419139), (9, 3139713), (17, 1662201), (27, 1046571), (51, 554067), (81, 348857), (153, 184689), (459, 61563), (1377, 20521)]