257659311

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{467}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 442810368

約数和(自身を除く): 185151057

約数列:

[1, 3, 7, 13, 21, 39, 43, 47, 91, 129, 141, 273, 301, 329, 467, 559, 611, 903, 987, 1401, 1677, 1833, 2021, 3269, 3913, 4277, 6063, 6071, 9807, 11739, 12831, 14147, 18213, 20081, 21949, 26273, 42441, 42497, 60243, 65847, 78819, 127491, 140567, 153643, 183911, 261053, 285337, 421701, 460929, 551733, 783159, 856011, 943807, 1827371, 1997359, 2831421, 5482113, 5992077, 6606649, 12269491, 19819947, 36808473, 85886437, 257659311]

約数ペア:

[(1, 257659311), (3, 85886437), (7, 36808473), (13, 19819947), (21, 12269491), (39, 6606649), (43, 5992077), (47, 5482113), (91, 2831421), (129, 1997359), (141, 1827371), (273, 943807), (301, 856011), (329, 783159), (467, 551733), (559, 460929), (611, 421701), (903, 285337), (987, 261053), (1401, 183911), (1677, 153643), (1833, 140567), (2021, 127491), (3269, 78819), (3913, 65847), (4277, 60243), (6063, 42497), (6071, 42441), (9807, 26273), (11739, 21949), (12831, 20081), (14147, 18213)]