28255920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{139}}^1$

素因数の和:184

約数の個数: 240

約数和(自身を含む): 110826240

約数和(自身を除く): 82570320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 48, 55, 56, 60, 66, 70, 77, 80, 84, 88, 105, 110, 112, 120, 121, 132, 139, 140, 154, 165, 168, 176, 210, 220, 231, 240, 242, 264, 278, 280, 308, 330, 336, 363, 385, 417, 420, 440, 462, 484, 528, 556, 560, 605, 616, 660, 695, 726, 770, 834, 840, 847, 880, 924, 968, 973, 1112, 1155, 1210, 1232, 1320, 1390, 1452, 1529, 1540, 1668, 1680, 1694, 1815, 1848, 1936, 1946, 2085, 2224, 2310, 2420, 2541, 2640, 2780, 2904, 2919, 3058, 3080, 3336, 3388, 3630, 3696, 3892, 4170, 4235, 4587, 4620, 4840, 4865, 5082, 5560, 5808, 5838, 6116, 6160, 6672, 6776, 7260, 7645, 7784, 8340, 8470, 9174, 9240, 9680, 9730, 10164, 10703, 11120, 11676, 12232, 12705, 13552, 14520, 14595, 15290, 15568, 16680, 16819, 16940, 18348, 18480, 19460, 20328, 21406, 22935, 23352, 24464, 25410, 29040, 29190, 30580, 32109, 33360, 33638, 33880, 36696, 38920, 40656, 42812, 45870, 46704, 50457, 50820, 53515, 58380, 61160, 64218, 67276, 67760, 73392, 77840, 84095, 85624, 91740, 100914, 101640, 107030, 116760, 117733, 122320, 128436, 134552, 160545, 168190, 171248, 183480, 201828, 203280, 214060, 233520, 235466, 252285, 256872, 269104, 321090, 336380, 353199, 366960, 403656, 428120, 470932, 504570, 513744, 588665, 642180, 672760, 706398, 807312, 856240, 941864, 1009140, 1177330, 1284360, 1345520, 1412796, 1765995, 1883728, 2018280, 2354660, 2568720, 2825592, 3531990, 4036560, 4709320, 5651184, 7063980, 9418640, 14127960, 28255920]

約数ペア:

[(1, 28255920), (2, 14127960), (3, 9418640), (4, 7063980), (5, 5651184), (6, 4709320), (7, 4036560), (8, 3531990), (10, 2825592), (11, 2568720), (12, 2354660), (14, 2018280), (15, 1883728), (16, 1765995), (20, 1412796), (21, 1345520), (22, 1284360), (24, 1177330), (28, 1009140), (30, 941864), (33, 856240), (35, 807312), (40, 706398), (42, 672760), (44, 642180), (48, 588665), (55, 513744), (56, 504570), (60, 470932), (66, 428120), (70, 403656), (77, 366960), (80, 353199), (84, 336380), (88, 321090), (105, 269104), (110, 256872), (112, 252285), (120, 235466), (121, 233520), (132, 214060), (139, 203280), (140, 201828), (154, 183480), (165, 171248), (168, 168190), (176, 160545), (210, 134552), (220, 128436), (231, 122320), (240, 117733), (242, 116760), (264, 107030), (278, 101640), (280, 100914), (308, 91740), (330, 85624), (336, 84095), (363, 77840), (385, 73392), (417, 67760), (420, 67276), (440, 64218), (462, 61160), (484, 58380), (528, 53515), (556, 50820), (560, 50457), (605, 46704), (616, 45870), (660, 42812), (695, 40656), (726, 38920), (770, 36696), (834, 33880), (840, 33638), (847, 33360), (880, 32109), (924, 30580), (968, 29190), (973, 29040), (1112, 25410), (1155, 24464), (1210, 23352), (1232, 22935), (1320, 21406), (1390, 20328), (1452, 19460), (1529, 18480), (1540, 18348), (1668, 16940), (1680, 16819), (1694, 16680), (1815, 15568), (1848, 15290), (1936, 14595), (1946, 14520), (2085, 13552), (2224, 12705), (2310, 12232), (2420, 11676), (2541, 11120), (2640, 10703), (2780, 10164), (2904, 9730), (2919, 9680), (3058, 9240), (3080, 9174), (3336, 8470), (3388, 8340), (3630, 7784), (3696, 7645), (3892, 7260), (4170, 6776), (4235, 6672), (4587, 6160), (4620, 6116), (4840, 5838), (4865, 5808), (5082, 5560)]