21396897

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{1307}}^1$

素因数の和:1437

約数の個数: 24

約数和(自身を含む): 33055776

約数和(自身を除く): 11658879

約数列:

[1, 3, 9, 17, 51, 107, 153, 321, 963, 1307, 1819, 3921, 5457, 11763, 16371, 22219, 66657, 139849, 199971, 419547, 1258641, 2377433, 7132299, 21396897]

約数ペア:

[(1, 21396897), (3, 7132299), (9, 2377433), (17, 1258641), (51, 419547), (107, 199971), (153, 139849), (321, 66657), (963, 22219), (1307, 16371), (1819, 11763), (3921, 5457)]