21052953

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15289}}^1$

素因数の和:15318

約数の個数: 20

約数和(自身を含む): 33301620

約数和(自身を除く): 12248667

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15289, 45867, 137601, 259913, 412803, 779739, 1238409, 2339217, 7017651, 21052953]

約数ペア:

[(1, 21052953), (3, 7017651), (9, 2339217), (17, 1238409), (27, 779739), (51, 412803), (81, 259913), (153, 137601), (459, 45867), (1377, 15289)]