28208880

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{193}}^1$

素因数の和:248

約数の個数: 240

約数和(自身を含む): 112582080

約数和(自身を除く): 84373200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 29, 30, 35, 36, 40, 42, 45, 48, 56, 58, 60, 63, 70, 72, 80, 84, 87, 90, 105, 112, 116, 120, 126, 140, 144, 145, 168, 174, 180, 193, 203, 210, 232, 240, 252, 261, 280, 290, 315, 336, 348, 360, 386, 406, 420, 435, 464, 504, 522, 560, 579, 580, 609, 630, 696, 720, 772, 812, 840, 870, 965, 1008, 1015, 1044, 1158, 1160, 1218, 1260, 1305, 1351, 1392, 1544, 1624, 1680, 1737, 1740, 1827, 1930, 2030, 2088, 2316, 2320, 2436, 2520, 2610, 2702, 2895, 3045, 3088, 3248, 3474, 3480, 3654, 3860, 4053, 4060, 4176, 4632, 4872, 5040, 5220, 5404, 5597, 5790, 6090, 6755, 6948, 6960, 7308, 7720, 8106, 8120, 8685, 9135, 9264, 9744, 10440, 10808, 11194, 11580, 12159, 12180, 13510, 13896, 14616, 15440, 16212, 16240, 16791, 17370, 18270, 20265, 20880, 21616, 22388, 23160, 24318, 24360, 27020, 27792, 27985, 29232, 32424, 33582, 34740, 36540, 39179, 40530, 44776, 46320, 48636, 48720, 50373, 54040, 55970, 60795, 64848, 67164, 69480, 73080, 78358, 81060, 83955, 89552, 97272, 100746, 108080, 111940, 117537, 121590, 134328, 138960, 146160, 156716, 162120, 167910, 194544, 195895, 201492, 223880, 235074, 243180, 251865, 268656, 313432, 324240, 335820, 352611, 391790, 402984, 447760, 470148, 486360, 503730, 587685, 626864, 671640, 705222, 783580, 805968, 940296, 972720, 1007460, 1175370, 1343280, 1410444, 1567160, 1763055, 1880592, 2014920, 2350740, 2820888, 3134320, 3526110, 4029840, 4701480, 5641776, 7052220, 9402960, 14104440, 28208880]

約数ペア:

[(1, 28208880), (2, 14104440), (3, 9402960), (4, 7052220), (5, 5641776), (6, 4701480), (7, 4029840), (8, 3526110), (9, 3134320), (10, 2820888), (12, 2350740), (14, 2014920), (15, 1880592), (16, 1763055), (18, 1567160), (20, 1410444), (21, 1343280), (24, 1175370), (28, 1007460), (29, 972720), (30, 940296), (35, 805968), (36, 783580), (40, 705222), (42, 671640), (45, 626864), (48, 587685), (56, 503730), (58, 486360), (60, 470148), (63, 447760), (70, 402984), (72, 391790), (80, 352611), (84, 335820), (87, 324240), (90, 313432), (105, 268656), (112, 251865), (116, 243180), (120, 235074), (126, 223880), (140, 201492), (144, 195895), (145, 194544), (168, 167910), (174, 162120), (180, 156716), (193, 146160), (203, 138960), (210, 134328), (232, 121590), (240, 117537), (252, 111940), (261, 108080), (280, 100746), (290, 97272), (315, 89552), (336, 83955), (348, 81060), (360, 78358), (386, 73080), (406, 69480), (420, 67164), (435, 64848), (464, 60795), (504, 55970), (522, 54040), (560, 50373), (579, 48720), (580, 48636), (609, 46320), (630, 44776), (696, 40530), (720, 39179), (772, 36540), (812, 34740), (840, 33582), (870, 32424), (965, 29232), (1008, 27985), (1015, 27792), (1044, 27020), (1158, 24360), (1160, 24318), (1218, 23160), (1260, 22388), (1305, 21616), (1351, 20880), (1392, 20265), (1544, 18270), (1624, 17370), (1680, 16791), (1737, 16240), (1740, 16212), (1827, 15440), (1930, 14616), (2030, 13896), (2088, 13510), (2316, 12180), (2320, 12159), (2436, 11580), (2520, 11194), (2610, 10808), (2702, 10440), (2895, 9744), (3045, 9264), (3088, 9135), (3248, 8685), (3474, 8120), (3480, 8106), (3654, 7720), (3860, 7308), (4053, 6960), (4060, 6948), (4176, 6755), (4632, 6090), (4872, 5790), (5040, 5597), (5220, 5404)]