21036429

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15277}}^1$

素因数の和:15306

約数の個数: 20

約数和(自身を含む): 33275484

約数和(自身を除く): 12239055

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15277, 45831, 137493, 259709, 412479, 779127, 1237437, 2337381, 7012143, 21036429]

約数ペア:

[(1, 21036429), (3, 7012143), (9, 2337381), (17, 1237437), (27, 779127), (51, 412479), (81, 259709), (153, 137493), (459, 45831), (1377, 15277)]