21559813

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2399}}^1$

素因数の和:2472

約数の個数: 16

約数和(自身を含む): 25344000

約数和(自身を除く): 3784187

約数列:

[1, 11, 19, 43, 209, 473, 817, 2399, 8987, 26389, 45581, 103157, 501391, 1134727, 1959983, 21559813]

約数ペア:

[(1, 21559813), (11, 1959983), (19, 1134727), (43, 501391), (209, 103157), (473, 45581), (817, 26389), (2399, 8987)]