28213920

素因数分解:

$2^5\times 3^4\times 5^1\times 7^1\times {\mathrm{311}}^1$

素因数の和:345

約数の個数: 240

約数和(自身を含む): 114162048

約数和(自身を除く): 85948128

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 162, 168, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 311, 315, 324, 336, 360, 378, 405, 420, 432, 480, 504, 540, 560, 567, 622, 630, 648, 672, 720, 756, 810, 840, 864, 933, 945, 1008, 1080, 1120, 1134, 1244, 1260, 1296, 1440, 1512, 1555, 1620, 1680, 1866, 1890, 2016, 2160, 2177, 2268, 2488, 2520, 2592, 2799, 2835, 3024, 3110, 3240, 3360, 3732, 3780, 4320, 4354, 4536, 4665, 4976, 5040, 5598, 5670, 6048, 6220, 6480, 6531, 7464, 7560, 8397, 8708, 9072, 9330, 9952, 10080, 10885, 11196, 11340, 12440, 12960, 13062, 13995, 14928, 15120, 16794, 17416, 18144, 18660, 19593, 21770, 22392, 22680, 24880, 25191, 26124, 27990, 29856, 30240, 32655, 33588, 34832, 37320, 39186, 41985, 43540, 44784, 45360, 49760, 50382, 52248, 55980, 58779, 65310, 67176, 69664, 74640, 78372, 83970, 87080, 89568, 90720, 97965, 100764, 104496, 111960, 117558, 125955, 130620, 134352, 149280, 156744, 167940, 174160, 176337, 195930, 201528, 208992, 223920, 235116, 251910, 261240, 268704, 293895, 313488, 335880, 348320, 352674, 391860, 403056, 447840, 470232, 503820, 522480, 587790, 626976, 671760, 705348, 783720, 806112, 881685, 940464, 1007640, 1044960, 1175580, 1343520, 1410696, 1567440, 1763370, 1880928, 2015280, 2351160, 2821392, 3134880, 3526740, 4030560, 4702320, 5642784, 7053480, 9404640, 14106960, 28213920]

約数ペア:

[(1, 28213920), (2, 14106960), (3, 9404640), (4, 7053480), (5, 5642784), (6, 4702320), (7, 4030560), (8, 3526740), (9, 3134880), (10, 2821392), (12, 2351160), (14, 2015280), (15, 1880928), (16, 1763370), (18, 1567440), (20, 1410696), (21, 1343520), (24, 1175580), (27, 1044960), (28, 1007640), (30, 940464), (32, 881685), (35, 806112), (36, 783720), (40, 705348), (42, 671760), (45, 626976), (48, 587790), (54, 522480), (56, 503820), (60, 470232), (63, 447840), (70, 403056), (72, 391860), (80, 352674), (81, 348320), (84, 335880), (90, 313488), (96, 293895), (105, 268704), (108, 261240), (112, 251910), (120, 235116), (126, 223920), (135, 208992), (140, 201528), (144, 195930), (160, 176337), (162, 174160), (168, 167940), (180, 156744), (189, 149280), (210, 134352), (216, 130620), (224, 125955), (240, 117558), (252, 111960), (270, 104496), (280, 100764), (288, 97965), (311, 90720), (315, 89568), (324, 87080), (336, 83970), (360, 78372), (378, 74640), (405, 69664), (420, 67176), (432, 65310), (480, 58779), (504, 55980), (540, 52248), (560, 50382), (567, 49760), (622, 45360), (630, 44784), (648, 43540), (672, 41985), (720, 39186), (756, 37320), (810, 34832), (840, 33588), (864, 32655), (933, 30240), (945, 29856), (1008, 27990), (1080, 26124), (1120, 25191), (1134, 24880), (1244, 22680), (1260, 22392), (1296, 21770), (1440, 19593), (1512, 18660), (1555, 18144), (1620, 17416), (1680, 16794), (1866, 15120), (1890, 14928), (2016, 13995), (2160, 13062), (2177, 12960), (2268, 12440), (2488, 11340), (2520, 11196), (2592, 10885), (2799, 10080), (2835, 9952), (3024, 9330), (3110, 9072), (3240, 8708), (3360, 8397), (3732, 7560), (3780, 7464), (4320, 6531), (4354, 6480), (4536, 6220), (4665, 6048), (4976, 5670), (5040, 5598)]