256896640

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:451

約数の個数: 256

約数和(自身を含む): 826640640

約数和(自身を除く): 569744000

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 32, 35, 40, 44, 52, 55, 56, 64, 65, 70, 77, 80, 88, 91, 104, 110, 112, 128, 130, 140, 143, 154, 160, 176, 182, 208, 220, 224, 260, 280, 286, 308, 320, 352, 364, 385, 401, 416, 440, 448, 455, 520, 560, 572, 616, 640, 704, 715, 728, 770, 802, 832, 880, 896, 910, 1001, 1040, 1120, 1144, 1232, 1408, 1430, 1456, 1540, 1604, 1664, 1760, 1820, 2002, 2005, 2080, 2240, 2288, 2464, 2807, 2860, 2912, 3080, 3208, 3520, 3640, 4004, 4010, 4160, 4411, 4480, 4576, 4928, 5005, 5213, 5614, 5720, 5824, 6160, 6416, 7040, 7280, 8008, 8020, 8320, 8822, 9152, 9856, 10010, 10426, 11228, 11440, 11648, 12320, 12832, 14035, 14560, 16016, 16040, 17644, 18304, 20020, 20852, 22055, 22456, 22880, 24640, 25664, 26065, 28070, 29120, 30877, 32032, 32080, 35288, 36491, 40040, 41704, 44110, 44912, 45760, 49280, 51328, 52130, 56140, 57343, 58240, 61754, 64064, 64160, 70576, 72982, 80080, 83408, 88220, 89824, 91520, 104260, 112280, 114686, 123508, 128128, 128320, 141152, 145964, 154385, 160160, 166816, 176440, 179648, 182455, 208520, 224560, 229372, 247016, 256640, 282304, 286715, 291928, 308770, 320320, 333632, 352880, 359296, 364910, 401401, 417040, 449120, 458744, 494032, 564608, 573430, 583856, 617540, 640640, 667264, 705760, 729820, 802802, 834080, 898240, 917488, 988064, 1146860, 1167712, 1235080, 1411520, 1459640, 1605604, 1668160, 1796480, 1834976, 1976128, 2007005, 2293720, 2335424, 2470160, 2823040, 2919280, 3211208, 3336320, 3669952, 3952256, 4014010, 4587440, 4670848, 4940320, 5838560, 6422416, 7339904, 8028020, 9174880, 9880640, 11677120, 12844832, 16056040, 18349760, 19761280, 23354240, 25689664, 32112080, 36699520, 51379328, 64224160, 128448320, 256896640]

約数ペア:

[(1, 256896640), (2, 128448320), (4, 64224160), (5, 51379328), (7, 36699520), (8, 32112080), (10, 25689664), (11, 23354240), (13, 19761280), (14, 18349760), (16, 16056040), (20, 12844832), (22, 11677120), (26, 9880640), (28, 9174880), (32, 8028020), (35, 7339904), (40, 6422416), (44, 5838560), (52, 4940320), (55, 4670848), (56, 4587440), (64, 4014010), (65, 3952256), (70, 3669952), (77, 3336320), (80, 3211208), (88, 2919280), (91, 2823040), (104, 2470160), (110, 2335424), (112, 2293720), (128, 2007005), (130, 1976128), (140, 1834976), (143, 1796480), (154, 1668160), (160, 1605604), (176, 1459640), (182, 1411520), (208, 1235080), (220, 1167712), (224, 1146860), (260, 988064), (280, 917488), (286, 898240), (308, 834080), (320, 802802), (352, 729820), (364, 705760), (385, 667264), (401, 640640), (416, 617540), (440, 583856), (448, 573430), (455, 564608), (520, 494032), (560, 458744), (572, 449120), (616, 417040), (640, 401401), (704, 364910), (715, 359296), (728, 352880), (770, 333632), (802, 320320), (832, 308770), (880, 291928), (896, 286715), (910, 282304), (1001, 256640), (1040, 247016), (1120, 229372), (1144, 224560), (1232, 208520), (1408, 182455), (1430, 179648), (1456, 176440), (1540, 166816), (1604, 160160), (1664, 154385), (1760, 145964), (1820, 141152), (2002, 128320), (2005, 128128), (2080, 123508), (2240, 114686), (2288, 112280), (2464, 104260), (2807, 91520), (2860, 89824), (2912, 88220), (3080, 83408), (3208, 80080), (3520, 72982), (3640, 70576), (4004, 64160), (4010, 64064), (4160, 61754), (4411, 58240), (4480, 57343), (4576, 56140), (4928, 52130), (5005, 51328), (5213, 49280), (5614, 45760), (5720, 44912), (5824, 44110), (6160, 41704), (6416, 40040), (7040, 36491), (7280, 35288), (8008, 32080), (8020, 32032), (8320, 30877), (8822, 29120), (9152, 28070), (9856, 26065), (10010, 25664), (10426, 24640), (11228, 22880), (11440, 22456), (11648, 22055), (12320, 20852), (12832, 20020), (14035, 18304), (14560, 17644), (16016, 16040)]