21489208

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{206627}}^1$

素因数の和:206646

約数の個数: 16

約数和(自身を含む): 43391880

約数和(自身を除く): 21902672

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 206627, 413254, 826508, 1653016, 2686151, 5372302, 10744604, 21489208]

約数ペア:

[(1, 21489208), (2, 10744604), (4, 5372302), (8, 2686151), (13, 1653016), (26, 826508), (52, 413254), (104, 206627)]