128505440

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:509

約数の個数: 144

約数和(自身を含む): 363524112

約数和(自身を除く): 235018672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 49, 56, 70, 74, 80, 98, 112, 140, 148, 160, 185, 196, 224, 245, 259, 280, 296, 370, 392, 443, 490, 518, 560, 592, 740, 784, 886, 980, 1036, 1120, 1184, 1295, 1480, 1568, 1772, 1813, 1960, 2072, 2215, 2590, 2960, 3101, 3544, 3626, 3920, 4144, 4430, 5180, 5920, 6202, 7088, 7252, 7840, 8288, 8860, 9065, 10360, 12404, 14176, 14504, 15505, 16391, 17720, 18130, 20720, 21707, 24808, 29008, 31010, 32782, 35440, 36260, 41440, 43414, 49616, 58016, 62020, 65564, 70880, 72520, 81955, 86828, 99232, 108535, 114737, 124040, 131128, 145040, 163910, 173656, 217070, 229474, 248080, 262256, 290080, 327820, 347312, 434140, 458948, 496160, 524512, 573685, 655640, 694624, 803159, 868280, 917896, 1147370, 1311280, 1606318, 1736560, 1835792, 2294740, 2622560, 3212636, 3473120, 3671584, 4015795, 4589480, 6425272, 8031590, 9178960, 12850544, 16063180, 18357920, 25701088, 32126360, 64252720, 128505440]

約数ペア:

[(1, 128505440), (2, 64252720), (4, 32126360), (5, 25701088), (7, 18357920), (8, 16063180), (10, 12850544), (14, 9178960), (16, 8031590), (20, 6425272), (28, 4589480), (32, 4015795), (35, 3671584), (37, 3473120), (40, 3212636), (49, 2622560), (56, 2294740), (70, 1835792), (74, 1736560), (80, 1606318), (98, 1311280), (112, 1147370), (140, 917896), (148, 868280), (160, 803159), (185, 694624), (196, 655640), (224, 573685), (245, 524512), (259, 496160), (280, 458948), (296, 434140), (370, 347312), (392, 327820), (443, 290080), (490, 262256), (518, 248080), (560, 229474), (592, 217070), (740, 173656), (784, 163910), (886, 145040), (980, 131128), (1036, 124040), (1120, 114737), (1184, 108535), (1295, 99232), (1480, 86828), (1568, 81955), (1772, 72520), (1813, 70880), (1960, 65564), (2072, 62020), (2215, 58016), (2590, 49616), (2960, 43414), (3101, 41440), (3544, 36260), (3626, 35440), (3920, 32782), (4144, 31010), (4430, 29008), (5180, 24808), (5920, 21707), (6202, 20720), (7088, 18130), (7252, 17720), (7840, 16391), (8288, 15505), (8860, 14504), (9065, 14176), (10360, 12404)]