28951040

素因数分解:

$2^9\times 5^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:329

約数の個数: 80

約数和(自身を含む): 71299008

約数和(自身を除く): 42347968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 263, 320, 344, 430, 512, 526, 640, 688, 860, 1052, 1280, 1315, 1376, 1720, 2104, 2560, 2630, 2752, 3440, 4208, 5260, 5504, 6880, 8416, 10520, 11008, 11309, 13760, 16832, 21040, 22016, 22618, 27520, 33664, 42080, 45236, 55040, 56545, 67328, 84160, 90472, 110080, 113090, 134656, 168320, 180944, 226180, 336640, 361888, 452360, 673280, 723776, 904720, 1447552, 1809440, 2895104, 3618880, 5790208, 7237760, 14475520, 28951040]

約数ペア:

[(1, 28951040), (2, 14475520), (4, 7237760), (5, 5790208), (8, 3618880), (10, 2895104), (16, 1809440), (20, 1447552), (32, 904720), (40, 723776), (43, 673280), (64, 452360), (80, 361888), (86, 336640), (128, 226180), (160, 180944), (172, 168320), (215, 134656), (256, 113090), (263, 110080), (320, 90472), (344, 84160), (430, 67328), (512, 56545), (526, 55040), (640, 45236), (688, 42080), (860, 33664), (1052, 27520), (1280, 22618), (1315, 22016), (1376, 21040), (1720, 16832), (2104, 13760), (2560, 11309), (2630, 11008), (2752, 10520), (3440, 8416), (4208, 6880), (5260, 5504)]