18728509

素因数分解:

${\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2521}}^1$

素因数の和:2580

約数の個数: 16

約数和(自身を含む): 21790080

約数和(自身を除く): 3061571

約数列:

[1, 17, 19, 23, 323, 391, 437, 2521, 7429, 42857, 47899, 57983, 814283, 985711, 1101677, 18728509]

約数ペア:

[(1, 18728509), (17, 1101677), (19, 985711), (23, 814283), (323, 57983), (391, 47899), (437, 42857), (2521, 7429)]