201810820

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{20551}}^1$

素因数の和:21051

約数の個数: 24

約数和(自身を含む): 424686528

約数和(自身を除く): 222875708

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 9820, 20551, 41102, 82204, 102755, 205510, 411020, 10090541, 20181082, 40362164, 50452705, 100905410, 201810820]

約数ペア:

[(1, 201810820), (2, 100905410), (4, 50452705), (5, 40362164), (10, 20181082), (20, 10090541), (491, 411020), (982, 205510), (1964, 102755), (2455, 82204), (4910, 41102), (9820, 20551)]