21586059

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 14266485

約数列:

[1, 3, 9, 11, 33, 37, 71, 83, 99, 111, 213, 249, 333, 407, 639, 747, 781, 913, 1221, 2343, 2627, 2739, 3071, 3663, 5893, 7029, 7881, 8217, 9213, 17679, 23643, 27639, 28897, 33781, 53037, 64823, 86691, 101343, 194469, 218041, 260073, 304029, 583407, 654123, 1962369, 2398451, 7195353, 21586059]

約数ペア:

[(1, 21586059), (3, 7195353), (9, 2398451), (11, 1962369), (33, 654123), (37, 583407), (71, 304029), (83, 260073), (99, 218041), (111, 194469), (213, 101343), (249, 86691), (333, 64823), (407, 53037), (639, 33781), (747, 28897), (781, 27639), (913, 23643), (1221, 17679), (2343, 9213), (2627, 8217), (2739, 7881), (3071, 7029), (3663, 5893)]