256890240

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{433}}^1$

素因数の和:561

約数の個数: 192

約数和(自身を含む): 897755040

約数和(自身を除く): 640864800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 103, 120, 128, 144, 160, 180, 192, 206, 240, 288, 309, 320, 360, 384, 412, 433, 480, 515, 576, 618, 640, 720, 824, 866, 927, 960, 1030, 1152, 1236, 1299, 1440, 1545, 1648, 1732, 1854, 1920, 2060, 2165, 2472, 2598, 2880, 3090, 3296, 3464, 3708, 3897, 4120, 4330, 4635, 4944, 5196, 5760, 6180, 6495, 6592, 6928, 7416, 7794, 8240, 8660, 9270, 9888, 10392, 12360, 12990, 13184, 13856, 14832, 15588, 16480, 17320, 18540, 19485, 19776, 20784, 24720, 25980, 27712, 29664, 31176, 32960, 34640, 37080, 38970, 39552, 41568, 44599, 49440, 51960, 55424, 59328, 62352, 65920, 69280, 74160, 77940, 83136, 89198, 98880, 103920, 118656, 124704, 133797, 138560, 148320, 155880, 166272, 178396, 197760, 207840, 222995, 249408, 267594, 277120, 296640, 311760, 356792, 401391, 415680, 445990, 498816, 535188, 593280, 623520, 668985, 713584, 802782, 831360, 891980, 1070376, 1247040, 1337970, 1427168, 1605564, 1783960, 2006955, 2140752, 2494080, 2675940, 2854336, 3211128, 3567920, 4013910, 4281504, 5351880, 5708672, 6422256, 7135840, 8027820, 8563008, 10703760, 12844512, 14271680, 16055640, 17126016, 21407520, 25689024, 28543360, 32111280, 42815040, 51378048, 64222560, 85630080, 128445120, 256890240]

約数ペア:

[(1, 256890240), (2, 128445120), (3, 85630080), (4, 64222560), (5, 51378048), (6, 42815040), (8, 32111280), (9, 28543360), (10, 25689024), (12, 21407520), (15, 17126016), (16, 16055640), (18, 14271680), (20, 12844512), (24, 10703760), (30, 8563008), (32, 8027820), (36, 7135840), (40, 6422256), (45, 5708672), (48, 5351880), (60, 4281504), (64, 4013910), (72, 3567920), (80, 3211128), (90, 2854336), (96, 2675940), (103, 2494080), (120, 2140752), (128, 2006955), (144, 1783960), (160, 1605564), (180, 1427168), (192, 1337970), (206, 1247040), (240, 1070376), (288, 891980), (309, 831360), (320, 802782), (360, 713584), (384, 668985), (412, 623520), (433, 593280), (480, 535188), (515, 498816), (576, 445990), (618, 415680), (640, 401391), (720, 356792), (824, 311760), (866, 296640), (927, 277120), (960, 267594), (1030, 249408), (1152, 222995), (1236, 207840), (1299, 197760), (1440, 178396), (1545, 166272), (1648, 155880), (1732, 148320), (1854, 138560), (1920, 133797), (2060, 124704), (2165, 118656), (2472, 103920), (2598, 98880), (2880, 89198), (3090, 83136), (3296, 77940), (3464, 74160), (3708, 69280), (3897, 65920), (4120, 62352), (4330, 59328), (4635, 55424), (4944, 51960), (5196, 49440), (5760, 44599), (6180, 41568), (6495, 39552), (6592, 38970), (6928, 37080), (7416, 34640), (7794, 32960), (8240, 31176), (8660, 29664), (9270, 27712), (9888, 25980), (10392, 24720), (12360, 20784), (12990, 19776), (13184, 19485), (13856, 18540), (14832, 17320), (15588, 16480)]