28909090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{412987}}^1$

素因数の和:413001

約数の個数: 16

約数和(自身を含む): 59470272

約数和(自身を除く): 30561182

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 412987, 825974, 2064935, 2890909, 4129870, 5781818, 14454545, 28909090]

約数ペア:

[(1, 28909090), (2, 14454545), (5, 5781818), (7, 4129870), (10, 2890909), (14, 2064935), (35, 825974), (70, 412987)]