21158193

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{23431}}^1$

素因数の和:23484

約数の個数: 16

約数和(自身を含む): 32992256

約数和(自身を除く): 11834063

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 23431, 70293, 164017, 492051, 1007533, 3022599, 7052731, 21158193]

約数ペア:

[(1, 21158193), (3, 7052731), (7, 3022599), (21, 1007533), (43, 492051), (129, 164017), (301, 70293), (903, 23431)]