21781353

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{34739}}^1$

素因数の和:34772

約数の個数: 16

約数和(自身を含む): 33350400

約数和(自身を除く): 11569047

約数列:

[1, 3, 11, 19, 33, 57, 209, 627, 34739, 104217, 382129, 660041, 1146387, 1980123, 7260451, 21781353]

約数ペア:

[(1, 21781353), (3, 7260451), (11, 1980123), (19, 1146387), (33, 660041), (57, 382129), (209, 104217), (627, 34739)]