21031208

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{238991}}^1$

素因数の和:239008

約数の個数: 16

約数和(自身を含む): 43018560

約数和(自身を除く): 21987352

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 238991, 477982, 955964, 1911928, 2628901, 5257802, 10515604, 21031208]

約数ペア:

[(1, 21031208), (2, 10515604), (4, 5257802), (8, 2628901), (11, 1911928), (22, 955964), (44, 477982), (88, 238991)]