2521305

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1303}}^1$

素因数の和:1357

約数の個数: 24

約数和(自身を含む): 4475328

約数和(自身を除く): 1954023

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1303, 1935, 3909, 6515, 11727, 19545, 56029, 58635, 168087, 280145, 504261, 840435, 2521305]

約数ペア:

[(1, 2521305), (3, 840435), (5, 504261), (9, 280145), (15, 168087), (43, 58635), (45, 56029), (129, 19545), (215, 11727), (387, 6515), (645, 3909), (1303, 1935)]