1281006720

素因数分解:

$2^7\times 3^2\times 5^1\times 7^1\times {\mathrm{31771}}^1$

素因数の和:31803

約数の個数: 192

約数和(自身を含む): 5055560640

約数和(自身を除く): 3774553920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 560, 576, 630, 640, 672, 720, 840, 896, 960, 1008, 1120, 1152, 1260, 1344, 1440, 1680, 1920, 2016, 2240, 2520, 2688, 2880, 3360, 4032, 4480, 5040, 5760, 6720, 8064, 10080, 13440, 20160, 31771, 40320, 63542, 95313, 127084, 158855, 190626, 222397, 254168, 285939, 317710, 381252, 444794, 476565, 508336, 571878, 635420, 667191, 762504, 889588, 953130, 1016672, 1111985, 1143756, 1270840, 1334382, 1429695, 1525008, 1779176, 1906260, 2001573, 2033344, 2223970, 2287512, 2541680, 2668764, 2859390, 3050016, 3335955, 3558352, 3812520, 4003146, 4066688, 4447940, 4575024, 5083360, 5337528, 5718780, 6100032, 6671910, 7116704, 7625040, 8006292, 8895880, 9150048, 10007865, 10166720, 10675056, 11437560, 12200064, 13343820, 14233408, 15250080, 16012584, 17791760, 18300096, 20015730, 20333440, 21350112, 22875120, 26687640, 28466816, 30500160, 32025168, 35583520, 36600192, 40031460, 42700224, 45750240, 53375280, 61000320, 64050336, 71167040, 80062920, 85400448, 91500480, 106750560, 128100672, 142334080, 160125840, 183000960, 213501120, 256201344, 320251680, 427002240, 640503360, 1281006720]

約数ペア:

[(1, 1281006720), (2, 640503360), (3, 427002240), (4, 320251680), (5, 256201344), (6, 213501120), (7, 183000960), (8, 160125840), (9, 142334080), (10, 128100672), (12, 106750560), (14, 91500480), (15, 85400448), (16, 80062920), (18, 71167040), (20, 64050336), (21, 61000320), (24, 53375280), (28, 45750240), (30, 42700224), (32, 40031460), (35, 36600192), (36, 35583520), (40, 32025168), (42, 30500160), (45, 28466816), (48, 26687640), (56, 22875120), (60, 21350112), (63, 20333440), (64, 20015730), (70, 18300096), (72, 17791760), (80, 16012584), (84, 15250080), (90, 14233408), (96, 13343820), (105, 12200064), (112, 11437560), (120, 10675056), (126, 10166720), (128, 10007865), (140, 9150048), (144, 8895880), (160, 8006292), (168, 7625040), (180, 7116704), (192, 6671910), (210, 6100032), (224, 5718780), (240, 5337528), (252, 5083360), (280, 4575024), (288, 4447940), (315, 4066688), (320, 4003146), (336, 3812520), (360, 3558352), (384, 3335955), (420, 3050016), (448, 2859390), (480, 2668764), (504, 2541680), (560, 2287512), (576, 2223970), (630, 2033344), (640, 2001573), (672, 1906260), (720, 1779176), (840, 1525008), (896, 1429695), (960, 1334382), (1008, 1270840), (1120, 1143756), (1152, 1111985), (1260, 1016672), (1344, 953130), (1440, 889588), (1680, 762504), (1920, 667191), (2016, 635420), (2240, 571878), (2520, 508336), (2688, 476565), (2880, 444794), (3360, 381252), (4032, 317710), (4480, 285939), (5040, 254168), (5760, 222397), (6720, 190626), (8064, 158855), (10080, 127084), (13440, 95313), (20160, 63542), (31771, 40320)]