20180240

素因数分解:

$2^4\times 5^1\times {\mathrm{252253}}^1$

素因数の和:252266

約数の個数: 20

約数和(自身を含む): 46919244

約数和(自身を除く): 26739004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252253, 504506, 1009012, 1261265, 2018024, 2522530, 4036048, 5045060, 10090120, 20180240]

約数ペア:

[(1, 20180240), (2, 10090120), (4, 5045060), (5, 4036048), (8, 2522530), (10, 2018024), (16, 1261265), (20, 1009012), (40, 504506), (80, 252253)]