28121379

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{65551}}^1$

素因数の和:65578

約数の個数: 16

約数和(自身を含む): 44050944

約数和(自身を除く): 15929565

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 65551, 196653, 721061, 852163, 2163183, 2556489, 9373793, 28121379]

約数ペア:

[(1, 28121379), (3, 9373793), (11, 2556489), (13, 2163183), (33, 852163), (39, 721061), (143, 196653), (429, 65551)]