16921953

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{12289}}^1$

素因数の和:12318

約数の個数: 20

約数和(自身を含む): 26767620

約数和(自身を除く): 9845667

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 12289, 36867, 110601, 208913, 331803, 626739, 995409, 1880217, 5640651, 16921953]

約数ペア:

[(1, 16921953), (3, 5640651), (9, 1880217), (17, 995409), (27, 626739), (51, 331803), (81, 208913), (153, 110601), (459, 36867), (1377, 12289)]