28019520

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:99

約数の個数: 280

約数和(自身を含む): 106216704

約数和(自身を除く): 78197184

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 32, 36, 40, 45, 46, 47, 48, 54, 60, 64, 69, 72, 80, 81, 90, 92, 94, 96, 108, 115, 120, 135, 138, 141, 144, 160, 162, 180, 184, 188, 192, 207, 216, 230, 235, 240, 270, 276, 282, 288, 320, 324, 345, 360, 368, 376, 405, 414, 423, 432, 460, 470, 480, 540, 552, 564, 576, 621, 648, 690, 705, 720, 736, 752, 810, 828, 846, 864, 920, 940, 960, 1035, 1080, 1081, 1104, 1128, 1242, 1269, 1296, 1380, 1410, 1440, 1472, 1504, 1620, 1656, 1692, 1728, 1840, 1863, 1880, 2070, 2115, 2160, 2162, 2208, 2256, 2484, 2538, 2592, 2760, 2820, 2880, 3008, 3105, 3240, 3243, 3312, 3384, 3680, 3726, 3760, 3807, 4140, 4230, 4320, 4324, 4416, 4512, 4968, 5076, 5184, 5405, 5520, 5640, 6210, 6345, 6480, 6486, 6624, 6768, 7360, 7452, 7520, 7614, 8280, 8460, 8640, 8648, 9024, 9315, 9729, 9936, 10152, 10810, 11040, 11280, 12420, 12690, 12960, 12972, 13248, 13536, 14904, 15040, 15228, 16215, 16560, 16920, 17296, 18630, 19035, 19458, 19872, 20304, 21620, 22080, 22560, 24840, 25380, 25920, 25944, 27072, 29187, 29808, 30456, 32430, 33120, 33840, 34592, 37260, 38070, 38916, 39744, 40608, 43240, 45120, 48645, 49680, 50760, 51888, 58374, 59616, 60912, 64860, 66240, 67680, 69184, 74520, 76140, 77832, 81216, 86480, 87561, 97290, 99360, 101520, 103776, 116748, 119232, 121824, 129720, 135360, 145935, 149040, 152280, 155664, 172960, 175122, 194580, 198720, 203040, 207552, 233496, 243648, 259440, 291870, 298080, 304560, 311328, 345920, 350244, 389160, 406080, 437805, 466992, 518880, 583740, 596160, 609120, 622656, 700488, 778320, 875610, 933984, 1037760, 1167480, 1218240, 1400976, 1556640, 1751220, 1867968, 2334960, 2801952, 3113280, 3502440, 4669920, 5603904, 7004880, 9339840, 14009760, 28019520]

約数ペア:

[(1, 28019520), (2, 14009760), (3, 9339840), (4, 7004880), (5, 5603904), (6, 4669920), (8, 3502440), (9, 3113280), (10, 2801952), (12, 2334960), (15, 1867968), (16, 1751220), (18, 1556640), (20, 1400976), (23, 1218240), (24, 1167480), (27, 1037760), (30, 933984), (32, 875610), (36, 778320), (40, 700488), (45, 622656), (46, 609120), (47, 596160), (48, 583740), (54, 518880), (60, 466992), (64, 437805), (69, 406080), (72, 389160), (80, 350244), (81, 345920), (90, 311328), (92, 304560), (94, 298080), (96, 291870), (108, 259440), (115, 243648), (120, 233496), (135, 207552), (138, 203040), (141, 198720), (144, 194580), (160, 175122), (162, 172960), (180, 155664), (184, 152280), (188, 149040), (192, 145935), (207, 135360), (216, 129720), (230, 121824), (235, 119232), (240, 116748), (270, 103776), (276, 101520), (282, 99360), (288, 97290), (320, 87561), (324, 86480), (345, 81216), (360, 77832), (368, 76140), (376, 74520), (405, 69184), (414, 67680), (423, 66240), (432, 64860), (460, 60912), (470, 59616), (480, 58374), (540, 51888), (552, 50760), (564, 49680), (576, 48645), (621, 45120), (648, 43240), (690, 40608), (705, 39744), (720, 38916), (736, 38070), (752, 37260), (810, 34592), (828, 33840), (846, 33120), (864, 32430), (920, 30456), (940, 29808), (960, 29187), (1035, 27072), (1080, 25944), (1081, 25920), (1104, 25380), (1128, 24840), (1242, 22560), (1269, 22080), (1296, 21620), (1380, 20304), (1410, 19872), (1440, 19458), (1472, 19035), (1504, 18630), (1620, 17296), (1656, 16920), (1692, 16560), (1728, 16215), (1840, 15228), (1863, 15040), (1880, 14904), (2070, 13536), (2115, 13248), (2160, 12972), (2162, 12960), (2208, 12690), (2256, 12420), (2484, 11280), (2538, 11040), (2592, 10810), (2760, 10152), (2820, 9936), (2880, 9729), (3008, 9315), (3105, 9024), (3240, 8648), (3243, 8640), (3312, 8460), (3384, 8280), (3680, 7614), (3726, 7520), (3760, 7452), (3807, 7360), (4140, 6768), (4230, 6624), (4320, 6486), (4324, 6480), (4416, 6345), (4512, 6210), (4968, 5640), (5076, 5520), (5184, 5405)]