28509080

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{6661}}^1$

素因数の和:6779

約数の個数: 32

約数和(自身を含む): 64754640

約数和(自身を除く): 36245560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 6661, 13322, 26644, 33305, 53288, 66610, 133220, 266440, 712727, 1425454, 2850908, 3563635, 5701816, 7127270, 14254540, 28509080]

約数ペア:

[(1, 28509080), (2, 14254540), (4, 7127270), (5, 5701816), (8, 3563635), (10, 2850908), (20, 1425454), (40, 712727), (107, 266440), (214, 133220), (428, 66610), (535, 53288), (856, 33305), (1070, 26644), (2140, 13322), (4280, 6661)]