123287920

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{4493}}^1$

素因数の和:4527

約数の個数: 80

約数和(自身を含む): 334353600

約数和(自身を除く): 211065680

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, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2744, 3430, 3920, 4493, 5488, 6860, 8986, 13720, 17972, 22465, 27440, 31451, 35944, 44930, 62902, 71888, 89860, 125804, 157255, 179720, 220157, 251608, 314510, 359440, 440314, 503216, 629020, 880628, 1100785, 1258040, 1541099, 1761256, 2201570, 2516080, 3082198, 3522512, 4403140, 6164396, 7705495, 8806280, 12328792, 15410990, 17612560, 24657584, 30821980, 61643960, 123287920]

約数ペア:

[(1, 123287920), (2, 61643960), (4, 30821980), (5, 24657584), (7, 17612560), (8, 15410990), (10, 12328792), (14, 8806280), (16, 7705495), (20, 6164396), (28, 4403140), (35, 3522512), (40, 3082198), (49, 2516080), (56, 2201570), (70, 1761256), (80, 1541099), (98, 1258040), (112, 1100785), (140, 880628), (196, 629020), (245, 503216), (280, 440314), (343, 359440), (392, 314510), (490, 251608), (560, 220157), (686, 179720), (784, 157255), (980, 125804), (1372, 89860), (1715, 71888), (1960, 62902), (2744, 44930), (3430, 35944), (3920, 31451), (4493, 27440), (5488, 22465), (6860, 17972), (8986, 13720)]