638072640

素因数分解:

$2^6\times 3^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:371

約数の個数: 280

約数和(自身を含む): 2301361920

約数和(自身を除く): 1663289280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 103, 108, 120, 135, 144, 160, 162, 180, 192, 206, 216, 239, 240, 270, 288, 309, 320, 324, 360, 405, 412, 432, 478, 480, 515, 540, 576, 618, 648, 717, 720, 810, 824, 864, 927, 956, 960, 1030, 1080, 1195, 1236, 1296, 1434, 1440, 1545, 1620, 1648, 1728, 1854, 1912, 2060, 2151, 2160, 2390, 2472, 2592, 2781, 2868, 2880, 3090, 3240, 3296, 3585, 3708, 3824, 4120, 4302, 4320, 4635, 4780, 4944, 5184, 5562, 5736, 6180, 6453, 6480, 6592, 7170, 7416, 7648, 8240, 8343, 8604, 8640, 9270, 9560, 9888, 10755, 11124, 11472, 12360, 12906, 12960, 13905, 14340, 14832, 15296, 16480, 16686, 17208, 18540, 19120, 19359, 19776, 21510, 22248, 22944, 24617, 24720, 25812, 25920, 27810, 28680, 29664, 32265, 32960, 33372, 34416, 37080, 38240, 38718, 41715, 43020, 44496, 45888, 49234, 49440, 51624, 55620, 57360, 59328, 64530, 66744, 68832, 73851, 74160, 76480, 77436, 83430, 86040, 88992, 96795, 98468, 98880, 103248, 111240, 114720, 123085, 129060, 133488, 137664, 147702, 148320, 154872, 166860, 172080, 177984, 193590, 196936, 206496, 221553, 222480, 229440, 246170, 258120, 266976, 295404, 296640, 309744, 333720, 344160, 369255, 387180, 393872, 412992, 443106, 444960, 492340, 516240, 533952, 590808, 619488, 664659, 667440, 688320, 738510, 774360, 787744, 886212, 889920, 984680, 1032480, 1107765, 1181616, 1238976, 1329318, 1334880, 1477020, 1548720, 1575488, 1772424, 1969360, 1993977, 2064960, 2215530, 2363232, 2658636, 2669760, 2954040, 3097440, 3323295, 3544848, 3938720, 3987954, 4431060, 4726464, 5317272, 5908080, 6194880, 6646590, 7089696, 7877440, 7975908, 8862120, 9969885, 10634544, 11816160, 13293180, 14179392, 15951816, 17724240, 19939770, 21269088, 23632320, 26586360, 31903632, 35448480, 39879540, 42538176, 53172720, 63807264, 70896960, 79759080, 106345440, 127614528, 159518160, 212690880, 319036320, 638072640]

約数ペア:

[(1, 638072640), (2, 319036320), (3, 212690880), (4, 159518160), (5, 127614528), (6, 106345440), (8, 79759080), (9, 70896960), (10, 63807264), (12, 53172720), (15, 42538176), (16, 39879540), (18, 35448480), (20, 31903632), (24, 26586360), (27, 23632320), (30, 21269088), (32, 19939770), (36, 17724240), (40, 15951816), (45, 14179392), (48, 13293180), (54, 11816160), (60, 10634544), (64, 9969885), (72, 8862120), (80, 7975908), (81, 7877440), (90, 7089696), (96, 6646590), (103, 6194880), (108, 5908080), (120, 5317272), (135, 4726464), (144, 4431060), (160, 3987954), (162, 3938720), (180, 3544848), (192, 3323295), (206, 3097440), (216, 2954040), (239, 2669760), (240, 2658636), (270, 2363232), (288, 2215530), (309, 2064960), (320, 1993977), (324, 1969360), (360, 1772424), (405, 1575488), (412, 1548720), (432, 1477020), (478, 1334880), (480, 1329318), (515, 1238976), (540, 1181616), (576, 1107765), (618, 1032480), (648, 984680), (717, 889920), (720, 886212), (810, 787744), (824, 774360), (864, 738510), (927, 688320), (956, 667440), (960, 664659), (1030, 619488), (1080, 590808), (1195, 533952), (1236, 516240), (1296, 492340), (1434, 444960), (1440, 443106), (1545, 412992), (1620, 393872), (1648, 387180), (1728, 369255), (1854, 344160), (1912, 333720), (2060, 309744), (2151, 296640), (2160, 295404), (2390, 266976), (2472, 258120), (2592, 246170), (2781, 229440), (2868, 222480), (2880, 221553), (3090, 206496), (3240, 196936), (3296, 193590), (3585, 177984), (3708, 172080), (3824, 166860), (4120, 154872), (4302, 148320), (4320, 147702), (4635, 137664), (4780, 133488), (4944, 129060), (5184, 123085), (5562, 114720), (5736, 111240), (6180, 103248), (6453, 98880), (6480, 98468), (6592, 96795), (7170, 88992), (7416, 86040), (7648, 83430), (8240, 77436), (8343, 76480), (8604, 74160), (8640, 73851), (9270, 68832), (9560, 66744), (9888, 64530), (10755, 59328), (11124, 57360), (11472, 55620), (12360, 51624), (12906, 49440), (12960, 49234), (13905, 45888), (14340, 44496), (14832, 43020), (15296, 41715), (16480, 38718), (16686, 38240), (17208, 37080), (18540, 34416), (19120, 33372), (19359, 32960), (19776, 32265), (21510, 29664), (22248, 28680), (22944, 27810), (24617, 25920), (24720, 25812)]