18918970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{270271}}^1$

素因数の和:270285

約数の個数: 16

約数和(自身を含む): 38919168

約数和(自身を除く): 20000198

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 270271, 540542, 1351355, 1891897, 2702710, 3783794, 9459485, 18918970]

約数ペア:

[(1, 18918970), (2, 9459485), (5, 3783794), (7, 2702710), (10, 1891897), (14, 1351355), (35, 540542), (70, 270271)]