128371640

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{17929}}^1$

素因数の和:18119

約数の個数: 32

約数和(自身を含む): 290466000

約数和(自身を除く): 162094360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 3580, 7160, 17929, 35858, 71716, 89645, 143432, 179290, 358580, 717160, 3209291, 6418582, 12837164, 16046455, 25674328, 32092910, 64185820, 128371640]

約数ペア:

[(1, 128371640), (2, 64185820), (4, 32092910), (5, 25674328), (8, 16046455), (10, 12837164), (20, 6418582), (40, 3209291), (179, 717160), (358, 358580), (716, 179290), (895, 143432), (1432, 89645), (1790, 71716), (3580, 35858), (7160, 17929)]