289553740

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{42209}}^1$

素因数の和:42239

約数の個数: 48

約数和(自身を含む): 709128000

約数和(自身を除く): 419574260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 42209, 84418, 168836, 211045, 295463, 422090, 590926, 844180, 1181852, 1477315, 2068241, 2954630, 4136482, 5909260, 8272964, 10341205, 14477687, 20682410, 28955374, 41364820, 57910748, 72388435, 144776870, 289553740]

約数ペア:

[(1, 289553740), (2, 144776870), (4, 72388435), (5, 57910748), (7, 41364820), (10, 28955374), (14, 20682410), (20, 14477687), (28, 10341205), (35, 8272964), (49, 5909260), (70, 4136482), (98, 2954630), (140, 2068241), (196, 1477315), (245, 1181852), (343, 844180), (490, 590926), (686, 422090), (980, 295463), (1372, 211045), (1715, 168836), (3430, 84418), (6860, 42209)]