256579323

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1987}}^1$

素因数の和:2064

約数の個数: 64

約数和(自身を含む): 470249472

約数和(自身を除く): 213670149

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 43, 77, 91, 129, 143, 231, 273, 301, 429, 473, 559, 903, 1001, 1419, 1677, 1987, 3003, 3311, 3913, 5961, 6149, 9933, 11739, 13909, 18447, 21857, 25831, 41727, 43043, 65571, 77493, 85441, 129129, 152999, 180817, 256323, 284141, 458997, 542451, 598087, 852423, 939851, 1110733, 1794261, 1988987, 2819553, 3332199, 5966961, 6578957, 7775131, 12218063, 19736871, 23325393, 36654189, 85526441, 256579323]

約数ペア:

[(1, 256579323), (3, 85526441), (7, 36654189), (11, 23325393), (13, 19736871), (21, 12218063), (33, 7775131), (39, 6578957), (43, 5966961), (77, 3332199), (91, 2819553), (129, 1988987), (143, 1794261), (231, 1110733), (273, 939851), (301, 852423), (429, 598087), (473, 542451), (559, 458997), (903, 284141), (1001, 256323), (1419, 180817), (1677, 152999), (1987, 129129), (3003, 85441), (3311, 77493), (3913, 65571), (5961, 43043), (6149, 41727), (9933, 25831), (11739, 21857), (13909, 18447)]