21011319

素因数分解:

$3^4\times 7^1\times {\mathrm{37057}}^1$

素因数の和:37076

約数の個数: 20

約数和(自身を含む): 35872144

約数和(自身を除く): 14860825

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 37057, 111171, 259399, 333513, 778197, 1000539, 2334591, 3001617, 7003773, 21011319]

約数ペア:

[(1, 21011319), (3, 7003773), (7, 3001617), (9, 2334591), (21, 1000539), (27, 778197), (63, 333513), (81, 259399), (189, 111171), (567, 37057)]