221279487

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{515803}}^1$

素因数の和:515830

約数の個数: 16

約数和(自身を含む): 346620288

約数和(自身を除く): 125340801

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 515803, 1547409, 5673833, 6705439, 17021499, 20116317, 73759829, 221279487]

約数ペア:

[(1, 221279487), (3, 73759829), (11, 20116317), (13, 17021499), (33, 6705439), (39, 5673833), (143, 1547409), (429, 515803)]