256280661

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{233}}^1$

素因数の和:355

約数の個数: 96

約数和(自身を含む): 490613760

約数和(自身を除く): 234333099

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 79, 91, 117, 119, 153, 221, 233, 237, 273, 357, 553, 663, 699, 711, 819, 1027, 1071, 1343, 1547, 1631, 1659, 1989, 2097, 3029, 3081, 3961, 4029, 4641, 4893, 4977, 7189, 9087, 9243, 9401, 11883, 12087, 13923, 14679, 17459, 18407, 21203, 21567, 27261, 27727, 28203, 35649, 51493, 52377, 55221, 63609, 64701, 83181, 84609, 122213, 128849, 154479, 157131, 165663, 190827, 239291, 249543, 312919, 360451, 366639, 386547, 463437, 717873, 938757, 1081353, 1099917, 1159641, 1675037, 2153619, 2190433, 2816271, 3244059, 4067947, 5025111, 6571299, 12203841, 15075333, 19713897, 28475629, 36611523, 85426887, 256280661]

約数ペア:

[(1, 256280661), (3, 85426887), (7, 36611523), (9, 28475629), (13, 19713897), (17, 15075333), (21, 12203841), (39, 6571299), (51, 5025111), (63, 4067947), (79, 3244059), (91, 2816271), (117, 2190433), (119, 2153619), (153, 1675037), (221, 1159641), (233, 1099917), (237, 1081353), (273, 938757), (357, 717873), (553, 463437), (663, 386547), (699, 366639), (711, 360451), (819, 312919), (1027, 249543), (1071, 239291), (1343, 190827), (1547, 165663), (1631, 157131), (1659, 154479), (1989, 128849), (2097, 122213), (3029, 84609), (3081, 83181), (3961, 64701), (4029, 63609), (4641, 55221), (4893, 52377), (4977, 51493), (7189, 35649), (9087, 28203), (9243, 27727), (9401, 27261), (11883, 21567), (12087, 21203), (13923, 18407), (14679, 17459)]