217709212

素因数分解:

$2^2\times 7^1\times {\mathrm{7775329}}^1$

素因数の和:7775340

約数の個数: 12

約数和(自身を含む): 435418480

約数和(自身を除く): 217709268

約数列:

[1, 2, 4, 7, 14, 28, 7775329, 15550658, 31101316, 54427303, 108854606, 217709212]

約数ペア:

[(1, 217709212), (2, 108854606), (4, 54427303), (7, 31101316), (14, 15550658), (28, 7775329)]