20180911870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{1979}}^1\times {\mathrm{145679}}^1$

素因数の和:147672

約数の個数: 32

約数和(自身を含む): 41536281600

約数和(自身を除く): 21355369730

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 1979, 3958, 9895, 13853, 19790, 27706, 69265, 138530, 145679, 291358, 728395, 1019753, 1456790, 2039506, 5098765, 10197530, 288298741, 576597482, 1441493705, 2018091187, 2882987410, 4036182374, 10090455935, 20180911870]

約数ペア:

[(1, 20180911870), (2, 10090455935), (5, 4036182374), (7, 2882987410), (10, 2018091187), (14, 1441493705), (35, 576597482), (70, 288298741), (1979, 10197530), (3958, 5098765), (9895, 2039506), (13853, 1456790), (19790, 1019753), (27706, 728395), (69265, 291358), (138530, 145679)]