21264350

素因数分解:

$2^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{4129}}^1$

素因数の和:4244

約数の個数: 24

約数和(自身を含む): 39945360

約数和(自身を除く): 18681010

約数列:

[1, 2, 5, 10, 25, 50, 103, 206, 515, 1030, 2575, 4129, 5150, 8258, 20645, 41290, 103225, 206450, 425287, 850574, 2126435, 4252870, 10632175, 21264350]

約数ペア:

[(1, 21264350), (2, 10632175), (5, 4252870), (10, 2126435), (25, 850574), (50, 425287), (103, 206450), (206, 103225), (515, 41290), (1030, 20645), (2575, 8258), (4129, 5150)]