28218960

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{509}}^1$

素因数の和:546

約数の個数: 240

約数和(自身を含む): 118385280

約数和(自身を除く): 90166320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 48, 55, 56, 60, 63, 66, 70, 72, 77, 80, 84, 88, 90, 99, 105, 110, 112, 120, 126, 132, 140, 144, 154, 165, 168, 176, 180, 198, 210, 220, 231, 240, 252, 264, 280, 308, 315, 330, 336, 360, 385, 396, 420, 440, 462, 495, 504, 509, 528, 560, 616, 630, 660, 693, 720, 770, 792, 840, 880, 924, 990, 1008, 1018, 1155, 1232, 1260, 1320, 1386, 1527, 1540, 1584, 1680, 1848, 1980, 2036, 2310, 2520, 2545, 2640, 2772, 3054, 3080, 3465, 3563, 3696, 3960, 4072, 4581, 4620, 5040, 5090, 5544, 5599, 6108, 6160, 6930, 7126, 7635, 7920, 8144, 9162, 9240, 10180, 10689, 11088, 11198, 12216, 13860, 14252, 15270, 16797, 17815, 18324, 18480, 20360, 21378, 22396, 22905, 24432, 27720, 27995, 28504, 30540, 32067, 33594, 35630, 36648, 39193, 40720, 42756, 44792, 45810, 50391, 53445, 55440, 55990, 57008, 61080, 64134, 67188, 71260, 73296, 78386, 83985, 85512, 89584, 91620, 100782, 106890, 111980, 117579, 122160, 128268, 134376, 142520, 156772, 160335, 167970, 171024, 183240, 195965, 201564, 213780, 223960, 235158, 251955, 256536, 268752, 285040, 313544, 320670, 335940, 352737, 366480, 391930, 403128, 427560, 447920, 470316, 503910, 513072, 587895, 627088, 641340, 671880, 705474, 783860, 806256, 855120, 940632, 1007820, 1175790, 1282680, 1343760, 1410948, 1567720, 1763685, 1881264, 2015640, 2351580, 2565360, 2821896, 3135440, 3527370, 4031280, 4703160, 5643792, 7054740, 9406320, 14109480, 28218960]

約数ペア:

[(1, 28218960), (2, 14109480), (3, 9406320), (4, 7054740), (5, 5643792), (6, 4703160), (7, 4031280), (8, 3527370), (9, 3135440), (10, 2821896), (11, 2565360), (12, 2351580), (14, 2015640), (15, 1881264), (16, 1763685), (18, 1567720), (20, 1410948), (21, 1343760), (22, 1282680), (24, 1175790), (28, 1007820), (30, 940632), (33, 855120), (35, 806256), (36, 783860), (40, 705474), (42, 671880), (44, 641340), (45, 627088), (48, 587895), (55, 513072), (56, 503910), (60, 470316), (63, 447920), (66, 427560), (70, 403128), (72, 391930), (77, 366480), (80, 352737), (84, 335940), (88, 320670), (90, 313544), (99, 285040), (105, 268752), (110, 256536), (112, 251955), (120, 235158), (126, 223960), (132, 213780), (140, 201564), (144, 195965), (154, 183240), (165, 171024), (168, 167970), (176, 160335), (180, 156772), (198, 142520), (210, 134376), (220, 128268), (231, 122160), (240, 117579), (252, 111980), (264, 106890), (280, 100782), (308, 91620), (315, 89584), (330, 85512), (336, 83985), (360, 78386), (385, 73296), (396, 71260), (420, 67188), (440, 64134), (462, 61080), (495, 57008), (504, 55990), (509, 55440), (528, 53445), (560, 50391), (616, 45810), (630, 44792), (660, 42756), (693, 40720), (720, 39193), (770, 36648), (792, 35630), (840, 33594), (880, 32067), (924, 30540), (990, 28504), (1008, 27995), (1018, 27720), (1155, 24432), (1232, 22905), (1260, 22396), (1320, 21378), (1386, 20360), (1527, 18480), (1540, 18324), (1584, 17815), (1680, 16797), (1848, 15270), (1980, 14252), (2036, 13860), (2310, 12216), (2520, 11198), (2545, 11088), (2640, 10689), (2772, 10180), (3054, 9240), (3080, 9162), (3465, 8144), (3563, 7920), (3696, 7635), (3960, 7126), (4072, 6930), (4581, 6160), (4620, 6108), (5040, 5599), (5090, 5544)]