256784220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{191}}^1$

素因数の和:321

約数の個数: 288

約数和(自身を含む): 986259456

約数和(自身を除く): 729475236

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 97, 99, 105, 110, 126, 132, 140, 154, 165, 180, 191, 194, 198, 210, 220, 231, 252, 291, 308, 315, 330, 382, 385, 388, 396, 420, 462, 485, 495, 573, 582, 630, 660, 679, 693, 764, 770, 873, 924, 955, 970, 990, 1067, 1146, 1155, 1164, 1260, 1337, 1358, 1386, 1455, 1540, 1719, 1746, 1910, 1940, 1980, 2037, 2101, 2134, 2292, 2310, 2674, 2716, 2772, 2865, 2910, 3201, 3395, 3438, 3465, 3492, 3820, 4011, 4074, 4202, 4268, 4365, 4620, 5335, 5348, 5730, 5820, 6111, 6303, 6402, 6685, 6790, 6876, 6930, 7469, 8022, 8148, 8404, 8595, 8730, 9603, 10185, 10505, 10670, 11460, 12033, 12222, 12606, 12804, 13370, 13580, 13860, 14707, 14938, 16005, 16044, 17190, 17460, 18527, 18909, 19206, 20055, 20370, 21010, 21340, 22407, 24066, 24444, 25212, 26740, 29414, 29876, 30555, 31515, 32010, 34380, 37054, 37345, 37818, 38412, 40110, 40740, 42020, 44121, 44814, 48015, 48132, 55581, 58828, 60165, 61110, 63030, 64020, 67221, 73535, 74108, 74690, 75636, 80220, 88242, 89628, 92635, 94545, 96030, 111162, 112035, 120330, 122220, 126060, 129689, 132363, 134442, 147070, 149380, 166743, 176484, 185270, 189090, 192060, 203797, 220605, 222324, 224070, 240660, 259378, 264726, 268884, 277905, 294140, 333486, 336105, 370540, 378180, 389067, 407594, 441210, 448140, 518756, 529452, 555810, 611391, 648445, 661815, 666972, 672210, 778134, 815188, 833715, 882420, 1018985, 1111620, 1167201, 1222782, 1296890, 1323630, 1344420, 1426579, 1556268, 1667430, 1834173, 1945335, 2037970, 2334402, 2445564, 2593780, 2647260, 2853158, 3056955, 3334860, 3668346, 3890670, 4075940, 4279737, 4668804, 5706316, 5836005, 6113910, 7132895, 7336692, 7781340, 8559474, 9170865, 11672010, 12227820, 12839211, 14265790, 17118948, 18341730, 21398685, 23344020, 25678422, 28531580, 36683460, 42797370, 51356844, 64196055, 85594740, 128392110, 256784220]

約数ペア:

[(1, 256784220), (2, 128392110), (3, 85594740), (4, 64196055), (5, 51356844), (6, 42797370), (7, 36683460), (9, 28531580), (10, 25678422), (11, 23344020), (12, 21398685), (14, 18341730), (15, 17118948), (18, 14265790), (20, 12839211), (21, 12227820), (22, 11672010), (28, 9170865), (30, 8559474), (33, 7781340), (35, 7336692), (36, 7132895), (42, 6113910), (44, 5836005), (45, 5706316), (55, 4668804), (60, 4279737), (63, 4075940), (66, 3890670), (70, 3668346), (77, 3334860), (84, 3056955), (90, 2853158), (97, 2647260), (99, 2593780), (105, 2445564), (110, 2334402), (126, 2037970), (132, 1945335), (140, 1834173), (154, 1667430), (165, 1556268), (180, 1426579), (191, 1344420), (194, 1323630), (198, 1296890), (210, 1222782), (220, 1167201), (231, 1111620), (252, 1018985), (291, 882420), (308, 833715), (315, 815188), (330, 778134), (382, 672210), (385, 666972), (388, 661815), (396, 648445), (420, 611391), (462, 555810), (485, 529452), (495, 518756), (573, 448140), (582, 441210), (630, 407594), (660, 389067), (679, 378180), (693, 370540), (764, 336105), (770, 333486), (873, 294140), (924, 277905), (955, 268884), (970, 264726), (990, 259378), (1067, 240660), (1146, 224070), (1155, 222324), (1164, 220605), (1260, 203797), (1337, 192060), (1358, 189090), (1386, 185270), (1455, 176484), (1540, 166743), (1719, 149380), (1746, 147070), (1910, 134442), (1940, 132363), (1980, 129689), (2037, 126060), (2101, 122220), (2134, 120330), (2292, 112035), (2310, 111162), (2674, 96030), (2716, 94545), (2772, 92635), (2865, 89628), (2910, 88242), (3201, 80220), (3395, 75636), (3438, 74690), (3465, 74108), (3492, 73535), (3820, 67221), (4011, 64020), (4074, 63030), (4202, 61110), (4268, 60165), (4365, 58828), (4620, 55581), (5335, 48132), (5348, 48015), (5730, 44814), (5820, 44121), (6111, 42020), (6303, 40740), (6402, 40110), (6685, 38412), (6790, 37818), (6876, 37345), (6930, 37054), (7469, 34380), (8022, 32010), (8148, 31515), (8404, 30555), (8595, 29876), (8730, 29414), (9603, 26740), (10185, 25212), (10505, 24444), (10670, 24066), (11460, 22407), (12033, 21340), (12222, 21010), (12606, 20370), (12804, 20055), (13370, 19206), (13580, 18909), (13860, 18527), (14707, 17460), (14938, 17190), (16005, 16044)]