18920090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{270287}}^1$

素因数の和:270301

約数の個数: 16

約数和(自身を含む): 38921472

約数和(自身を除く): 20001382

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 270287, 540574, 1351435, 1892009, 2702870, 3784018, 9460045, 18920090]

約数ペア:

[(1, 18920090), (2, 9460045), (5, 3784018), (7, 2702870), (10, 1892009), (14, 1351435), (35, 540574), (70, 270287)]