128028740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{914491}}^1$

素因数の和:914507

約数の個数: 24

約数和(自身を含む): 307269312

約数和(自身を除く): 179240572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 914491, 1828982, 3657964, 4572455, 6401437, 9144910, 12802874, 18289820, 25605748, 32007185, 64014370, 128028740]

約数ペア:

[(1, 128028740), (2, 64014370), (4, 32007185), (5, 25605748), (7, 18289820), (10, 12802874), (14, 9144910), (20, 6401437), (28, 4572455), (35, 3657964), (70, 1828982), (140, 914491)]