128523580

素因数分解:

$2^2\times 5^1\times {\mathrm{859}}^1\times {\mathrm{7481}}^1$

素因数の和:8349

約数の個数: 24

約数和(自身を含む): 270249840

約数和(自身を除く): 141726260

約数列:

[1, 2, 4, 5, 10, 20, 859, 1718, 3436, 4295, 7481, 8590, 14962, 17180, 29924, 37405, 74810, 149620, 6426179, 12852358, 25704716, 32130895, 64261790, 128523580]

約数ペア:

[(1, 128523580), (2, 64261790), (4, 32130895), (5, 25704716), (10, 12852358), (20, 6426179), (859, 149620), (1718, 74810), (3436, 37405), (4295, 29924), (7481, 17180), (8590, 14962)]