205518740

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{29959}}^1$

素因数の和:29989

約数の個数: 48

約数和(自身を含む): 503328000

約数和(自身を除く): 297809260

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, 29959, 59918, 119836, 149795, 209713, 299590, 419426, 599180, 838852, 1048565, 1467991, 2097130, 2935982, 4194260, 5871964, 7339955, 10275937, 14679910, 20551874, 29359820, 41103748, 51379685, 102759370, 205518740]

約数ペア:

[(1, 205518740), (2, 102759370), (4, 51379685), (5, 41103748), (7, 29359820), (10, 20551874), (14, 14679910), (20, 10275937), (28, 7339955), (35, 5871964), (49, 4194260), (70, 2935982), (98, 2097130), (140, 1467991), (196, 1048565), (245, 838852), (343, 599180), (490, 419426), (686, 299590), (980, 209713), (1372, 149795), (1715, 119836), (3430, 59918), (6860, 29959)]