128401826

素因数分解:

$2^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1\times {\mathrm{281}}^1$

素因数の和:674

約数の個数: 32

約数和(自身を含む): 223506432

約数和(自身を除く): 95104606

約数列:

[1, 2, 7, 14, 127, 254, 257, 281, 514, 562, 889, 1778, 1799, 1967, 3598, 3934, 32639, 35687, 65278, 71374, 72217, 144434, 228473, 249809, 456946, 499618, 505519, 1011038, 9171559, 18343118, 64200913, 128401826]

約数ペア:

[(1, 128401826), (2, 64200913), (7, 18343118), (14, 9171559), (127, 1011038), (254, 505519), (257, 499618), (281, 456946), (514, 249809), (562, 228473), (889, 144434), (1778, 72217), (1799, 71374), (1967, 65278), (3598, 35687), (3934, 32639)]