21713709

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^2\times {\mathrm{311}}^1$

素因数の和:405

約数の個数: 24

約数和(自身を含む): 31606848

約数和(自身を除く): 9893139

約数列:

[1, 3, 17, 37, 51, 111, 311, 629, 933, 1369, 1887, 4107, 5287, 11507, 15861, 23273, 34521, 69819, 195619, 425759, 586857, 1277277, 7237903, 21713709]

約数ペア:

[(1, 21713709), (3, 7237903), (17, 1277277), (37, 586857), (51, 425759), (111, 195619), (311, 69819), (629, 34521), (933, 23273), (1369, 15861), (1887, 11507), (4107, 5287)]