128500225

素因数分解:

$5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{7129}}^1$

素因数の和:7249

約数の個数: 24

約数和(自身を含む): 183896960

約数和(自身を除く): 55396735

約数列:

[1, 5, 7, 25, 35, 103, 175, 515, 721, 2575, 3605, 7129, 18025, 35645, 49903, 178225, 249515, 734287, 1247575, 3671435, 5140009, 18357175, 25700045, 128500225]

約数ペア:

[(1, 128500225), (5, 25700045), (7, 18357175), (25, 5140009), (35, 3671435), (103, 1247575), (175, 734287), (515, 249515), (721, 178225), (2575, 49903), (3605, 35645), (7129, 18025)]