256581567

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1109}}^1$

素因数の和:1189

約数の個数: 64

約数和(自身を含む): 447552000

約数和(自身を除く): 190970433

約数列:

[1, 3, 9, 11, 19, 27, 33, 41, 57, 99, 123, 171, 209, 297, 369, 451, 513, 627, 779, 1107, 1109, 1353, 1881, 2337, 3327, 4059, 5643, 7011, 8569, 9981, 12177, 12199, 21033, 21071, 25707, 29943, 36597, 45469, 63213, 77121, 109791, 136407, 189639, 231363, 231781, 329373, 409221, 500159, 568917, 695343, 863911, 1227663, 1500477, 2086029, 2591733, 4501431, 6258087, 7775199, 9503021, 13504293, 23325597, 28509063, 85527189, 256581567]

約数ペア:

[(1, 256581567), (3, 85527189), (9, 28509063), (11, 23325597), (19, 13504293), (27, 9503021), (33, 7775199), (41, 6258087), (57, 4501431), (99, 2591733), (123, 2086029), (171, 1500477), (209, 1227663), (297, 863911), (369, 695343), (451, 568917), (513, 500159), (627, 409221), (779, 329373), (1107, 231781), (1109, 231363), (1353, 189639), (1881, 136407), (2337, 109791), (3327, 77121), (4059, 63213), (5643, 45469), (7011, 36597), (8569, 29943), (9981, 25707), (12177, 21071), (12199, 21033)]