128738259

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{25589}}^1$

素因数の和:25651

約数の個数: 24

約数和(自身を含む): 204924720

約数和(自身を除く): 76186461

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 5031, 25589, 76767, 230301, 332657, 997971, 1100327, 2993913, 3300981, 9902943, 14304251, 42912753, 128738259]

約数ペア:

[(1, 128738259), (3, 42912753), (9, 14304251), (13, 9902943), (39, 3300981), (43, 2993913), (117, 1100327), (129, 997971), (387, 332657), (559, 230301), (1677, 76767), (5031, 25589)]