21078927

素因数分解:

$3^3\times {\mathrm{307}}^1\times {\mathrm{2543}}^1$

素因数の和:2859

約数の個数: 16

約数和(自身を含む): 31342080

約数和(自身を除く): 10263153

約数列:

[1, 3, 9, 27, 307, 921, 2543, 2763, 7629, 8289, 22887, 68661, 780701, 2342103, 7026309, 21078927]

約数ペア:

[(1, 21078927), (3, 7026309), (9, 2342103), (27, 780701), (307, 68661), (921, 22887), (2543, 8289), (2763, 7629)]