12704720

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{463}}^1$

素因数の和:497

約数の個数: 80

約数和(自身を含む): 34521600

約数和(自身を除く): 21816880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 463, 490, 560, 686, 784, 926, 980, 1372, 1715, 1852, 1960, 2315, 2744, 3241, 3430, 3704, 3920, 4630, 5488, 6482, 6860, 7408, 9260, 12964, 13720, 16205, 18520, 22687, 25928, 27440, 32410, 37040, 45374, 51856, 64820, 90748, 113435, 129640, 158809, 181496, 226870, 259280, 317618, 362992, 453740, 635236, 794045, 907480, 1270472, 1588090, 1814960, 2540944, 3176180, 6352360, 12704720]

約数ペア:

[(1, 12704720), (2, 6352360), (4, 3176180), (5, 2540944), (7, 1814960), (8, 1588090), (10, 1270472), (14, 907480), (16, 794045), (20, 635236), (28, 453740), (35, 362992), (40, 317618), (49, 259280), (56, 226870), (70, 181496), (80, 158809), (98, 129640), (112, 113435), (140, 90748), (196, 64820), (245, 51856), (280, 45374), (343, 37040), (392, 32410), (463, 27440), (490, 25928), (560, 22687), (686, 18520), (784, 16205), (926, 13720), (980, 12964), (1372, 9260), (1715, 7408), (1852, 6860), (1960, 6482), (2315, 5488), (2744, 4630), (3241, 3920), (3430, 3704)]