20199451280

素因数分解:

$2^4\times 5^1\times {\mathrm{252493141}}^1$

素因数の和:252493154

約数の個数: 20

約数和(自身を含む): 46963724412

約数和(自身を除く): 26764273132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252493141, 504986282, 1009972564, 1262465705, 2019945128, 2524931410, 4039890256, 5049862820, 10099725640, 20199451280]

約数ペア:

[(1, 20199451280), (2, 10099725640), (4, 5049862820), (5, 4039890256), (8, 2524931410), (10, 2019945128), (16, 1262465705), (20, 1009972564), (40, 504986282), (80, 252493141)]