21170241

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8431}}^1$

素因数の和:8474

約数の個数: 20

約数和(自身を含む): 32648704

約数和(自身を除く): 11478463

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8431, 25293, 75879, 227637, 261361, 682911, 784083, 2352249, 7056747, 21170241]

約数ペア:

[(1, 21170241), (3, 7056747), (9, 2352249), (27, 784083), (31, 682911), (81, 261361), (93, 227637), (279, 75879), (837, 25293), (2511, 8431)]