209966470

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{428503}}^1$

素因数の和:428524

約数の個数: 24

約数和(自身を含む): 439645104

約数和(自身を除く): 229678634

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 428503, 857006, 2142515, 2999521, 4285030, 5999042, 14997605, 20996647, 29995210, 41993294, 104983235, 209966470]

約数ペア:

[(1, 209966470), (2, 104983235), (5, 41993294), (7, 29995210), (10, 20996647), (14, 14997605), (35, 5999042), (49, 4285030), (70, 2999521), (98, 2142515), (245, 857006), (490, 428503)]