20204440

素因数分解:

$2^3\times 5^1\times {\mathrm{505111}}^1$

素因数の和:505122

約数の個数: 16

約数和(自身を含む): 45460080

約数和(自身を除く): 25255640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505111, 1010222, 2020444, 2525555, 4040888, 5051110, 10102220, 20204440]

約数ペア:

[(1, 20204440), (2, 10102220), (4, 5051110), (5, 4040888), (8, 2525555), (10, 2020444), (20, 1010222), (40, 505111)]