128720396

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{270421}}^1$

素因数の和:270449

約数の個数: 24

約数和(自身を含む): 272585376

約数和(自身を除く): 143864980

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 238, 476, 270421, 540842, 1081684, 1892947, 3785894, 4597157, 7571788, 9194314, 18388628, 32180099, 64360198, 128720396]

約数ペア:

[(1, 128720396), (2, 64360198), (4, 32180099), (7, 18388628), (14, 9194314), (17, 7571788), (28, 4597157), (34, 3785894), (68, 1892947), (119, 1081684), (238, 540842), (476, 270421)]