128861280

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:251

約数の個数: 240

約数和(自身を含む): 465063984

約数和(自身を除く): 336202704

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, 61, 72, 80, 81, 90, 96, 108, 120, 122, 135, 144, 160, 162, 163, 180, 183, 216, 240, 244, 270, 288, 305, 324, 326, 360, 366, 405, 432, 480, 488, 489, 540, 549, 610, 648, 652, 720, 732, 810, 815, 864, 915, 976, 978, 1080, 1098, 1220, 1296, 1304, 1440, 1464, 1467, 1620, 1630, 1647, 1830, 1952, 1956, 2160, 2196, 2440, 2445, 2592, 2608, 2745, 2928, 2934, 3240, 3260, 3294, 3660, 3912, 4320, 4392, 4401, 4880, 4890, 4941, 5216, 5490, 5856, 5868, 6480, 6520, 6588, 7320, 7335, 7824, 8235, 8784, 8802, 9760, 9780, 9882, 9943, 10980, 11736, 12960, 13040, 13176, 13203, 14640, 14670, 15648, 16470, 17568, 17604, 19560, 19764, 19886, 21960, 22005, 23472, 24705, 26080, 26352, 26406, 29280, 29340, 29829, 32940, 35208, 39120, 39528, 39772, 43920, 44010, 46944, 49410, 49715, 52704, 52812, 58680, 59658, 65880, 66015, 70416, 78240, 79056, 79544, 87840, 88020, 89487, 98820, 99430, 105624, 117360, 119316, 131760, 132030, 140832, 149145, 158112, 159088, 176040, 178974, 197640, 198860, 211248, 234720, 238632, 263520, 264060, 268461, 298290, 318176, 352080, 357948, 395280, 397720, 422496, 447435, 477264, 528120, 536922, 596580, 704160, 715896, 790560, 795440, 805383, 894870, 954528, 1056240, 1073844, 1193160, 1342305, 1431792, 1590880, 1610766, 1789740, 2112480, 2147688, 2386320, 2684610, 2863584, 3221532, 3579480, 4026915, 4295376, 4772640, 5369220, 6443064, 7158960, 8053830, 8590752, 10738440, 12886128, 14317920, 16107660, 21476880, 25772256, 32215320, 42953760, 64430640, 128861280]

約数ペア:

[(1, 128861280), (2, 64430640), (3, 42953760), (4, 32215320), (5, 25772256), (6, 21476880), (8, 16107660), (9, 14317920), (10, 12886128), (12, 10738440), (15, 8590752), (16, 8053830), (18, 7158960), (20, 6443064), (24, 5369220), (27, 4772640), (30, 4295376), (32, 4026915), (36, 3579480), (40, 3221532), (45, 2863584), (48, 2684610), (54, 2386320), (60, 2147688), (61, 2112480), (72, 1789740), (80, 1610766), (81, 1590880), (90, 1431792), (96, 1342305), (108, 1193160), (120, 1073844), (122, 1056240), (135, 954528), (144, 894870), (160, 805383), (162, 795440), (163, 790560), (180, 715896), (183, 704160), (216, 596580), (240, 536922), (244, 528120), (270, 477264), (288, 447435), (305, 422496), (324, 397720), (326, 395280), (360, 357948), (366, 352080), (405, 318176), (432, 298290), (480, 268461), (488, 264060), (489, 263520), (540, 238632), (549, 234720), (610, 211248), (648, 198860), (652, 197640), (720, 178974), (732, 176040), (810, 159088), (815, 158112), (864, 149145), (915, 140832), (976, 132030), (978, 131760), (1080, 119316), (1098, 117360), (1220, 105624), (1296, 99430), (1304, 98820), (1440, 89487), (1464, 88020), (1467, 87840), (1620, 79544), (1630, 79056), (1647, 78240), (1830, 70416), (1952, 66015), (1956, 65880), (2160, 59658), (2196, 58680), (2440, 52812), (2445, 52704), (2592, 49715), (2608, 49410), (2745, 46944), (2928, 44010), (2934, 43920), (3240, 39772), (3260, 39528), (3294, 39120), (3660, 35208), (3912, 32940), (4320, 29829), (4392, 29340), (4401, 29280), (4880, 26406), (4890, 26352), (4941, 26080), (5216, 24705), (5490, 23472), (5856, 22005), (5868, 21960), (6480, 19886), (6520, 19764), (6588, 19560), (7320, 17604), (7335, 17568), (7824, 16470), (8235, 15648), (8784, 14670), (8802, 14640), (9760, 13203), (9780, 13176), (9882, 13040), (9943, 12960), (10980, 11736)]