128764040

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{23159}}^1$

素因数の和:23309

約数の個数: 32

約数和(自身を含む): 291816000

約数和(自身を除く): 163051960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 23159, 46318, 92636, 115795, 185272, 231590, 463180, 926360, 3219101, 6438202, 12876404, 16095505, 25752808, 32191010, 64382020, 128764040]

約数ペア:

[(1, 128764040), (2, 64382020), (4, 32191010), (5, 25752808), (8, 16095505), (10, 12876404), (20, 6438202), (40, 3219101), (139, 926360), (278, 463180), (556, 231590), (695, 185272), (1112, 115795), (1390, 92636), (2780, 46318), (5560, 23159)]