12540080

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{457}}^1$

素因数の和:491

約数の個数: 80

約数和(自身を含む): 34075200

約数和(自身を除く): 21535120

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, 457, 490, 560, 686, 784, 914, 980, 1372, 1715, 1828, 1960, 2285, 2744, 3199, 3430, 3656, 3920, 4570, 5488, 6398, 6860, 7312, 9140, 12796, 13720, 15995, 18280, 22393, 25592, 27440, 31990, 36560, 44786, 51184, 63980, 89572, 111965, 127960, 156751, 179144, 223930, 255920, 313502, 358288, 447860, 627004, 783755, 895720, 1254008, 1567510, 1791440, 2508016, 3135020, 6270040, 12540080]

約数ペア:

[(1, 12540080), (2, 6270040), (4, 3135020), (5, 2508016), (7, 1791440), (8, 1567510), (10, 1254008), (14, 895720), (16, 783755), (20, 627004), (28, 447860), (35, 358288), (40, 313502), (49, 255920), (56, 223930), (70, 179144), (80, 156751), (98, 127960), (112, 111965), (140, 89572), (196, 63980), (245, 51184), (280, 44786), (343, 36560), (392, 31990), (457, 27440), (490, 25592), (560, 22393), (686, 18280), (784, 15995), (914, 13720), (980, 12796), (1372, 9140), (1715, 7312), (1828, 6860), (1960, 6398), (2285, 5488), (2744, 4570), (3199, 3920), (3430, 3656)]