681260223

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{18401}}^1$

素因数の和:18495

約数の個数: 32

約数和(自身を含む): 1088220672

約数和(自身を除く): 406960449

約数列:

[1, 3, 7, 21, 41, 43, 123, 129, 287, 301, 861, 903, 1763, 5289, 12341, 18401, 37023, 55203, 128807, 386421, 754441, 791243, 2263323, 2373729, 5281087, 5538701, 15843261, 16616103, 32440963, 97322889, 227086741, 681260223]

約数ペア:

[(1, 681260223), (3, 227086741), (7, 97322889), (21, 32440963), (41, 16616103), (43, 15843261), (123, 5538701), (129, 5281087), (287, 2373729), (301, 2263323), (861, 791243), (903, 754441), (1763, 386421), (5289, 128807), (12341, 55203), (18401, 37023)]