128764538

素因数分解:

$2^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{72421}}^1$

素因数の和:72557

約数の個数: 16

約数和(自身を含む): 222480384

約数和(自身を除く): 93715846

約数列:

[1, 2, 7, 14, 127, 254, 889, 1778, 72421, 144842, 506947, 1013894, 9197467, 18394934, 64382269, 128764538]

約数ペア:

[(1, 128764538), (2, 64382269), (7, 18394934), (14, 9197467), (127, 1013894), (254, 506947), (889, 144842), (1778, 72421)]