21071289

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{9851}}^1$

素因数の和:9908

約数の個数: 16

約数和(自身を含む): 30265344

約数和(自身を除く): 9194055

約数列:

[1, 3, 23, 31, 69, 93, 713, 2139, 9851, 29553, 226573, 305381, 679719, 916143, 7023763, 21071289]

約数ペア:

[(1, 21071289), (3, 7023763), (23, 916143), (31, 679719), (69, 305381), (93, 226573), (713, 29553), (2139, 9851)]