257755120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{1039}}^1$

素因数の和:1502

約数の個数: 80

約数和(自身を含む): 687098880

約数和(自身を除く): 429343760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 443, 560, 886, 1039, 1772, 2078, 2215, 3101, 3544, 4156, 4430, 5195, 6202, 7088, 7273, 8312, 8860, 10390, 12404, 14546, 15505, 16624, 17720, 20780, 24808, 29092, 31010, 35440, 36365, 41560, 49616, 58184, 62020, 72730, 83120, 116368, 124040, 145460, 248080, 290920, 460277, 581840, 920554, 1841108, 2301385, 3221939, 3682216, 4602770, 6443878, 7364432, 9205540, 12887756, 16109695, 18411080, 25775512, 32219390, 36822160, 51551024, 64438780, 128877560, 257755120]

約数ペア:

[(1, 257755120), (2, 128877560), (4, 64438780), (5, 51551024), (7, 36822160), (8, 32219390), (10, 25775512), (14, 18411080), (16, 16109695), (20, 12887756), (28, 9205540), (35, 7364432), (40, 6443878), (56, 4602770), (70, 3682216), (80, 3221939), (112, 2301385), (140, 1841108), (280, 920554), (443, 581840), (560, 460277), (886, 290920), (1039, 248080), (1772, 145460), (2078, 124040), (2215, 116368), (3101, 83120), (3544, 72730), (4156, 62020), (4430, 58184), (5195, 49616), (6202, 41560), (7088, 36365), (7273, 35440), (8312, 31010), (8860, 29092), (10390, 24808), (12404, 20780), (14546, 17720), (15505, 16624)]