211785816291

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{142042801}}^1$

素因数の和:142042882

約数の個数: 16

約数和(自身を含む): 327266615808

約数和(自身を除く): 115480799517

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 142042801, 426128403, 994299607, 2982898821, 10085038871, 30255116613, 70595272097, 211785816291]

約数ペア:

[(1, 211785816291), (3, 70595272097), (7, 30255116613), (21, 10085038871), (71, 2982898821), (213, 994299607), (497, 426128403), (1491, 142042801)]