21039943

素因数分解:

${\mathrm{43}}^1\times {\mathrm{67}}^2\times {\mathrm{109}}^1$

素因数の和:286

約数の個数: 12

約数和(自身を含む): 22055880

約数和(自身を除く): 1015937

約数列:

[1, 43, 67, 109, 2881, 4489, 4687, 7303, 193027, 314029, 489301, 21039943]

約数ペア:

[(1, 21039943), (43, 489301), (67, 314029), (109, 193027), (2881, 7303), (4489, 4687)]