39990020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{285643}}^1$

素因数の和:285659

約数の個数: 24

約数和(自身を含む): 95976384

約数和(自身を除く): 55986364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 285643, 571286, 1142572, 1428215, 1999501, 2856430, 3999002, 5712860, 7998004, 9997505, 19995010, 39990020]

約数ペア:

[(1, 39990020), (2, 19995010), (4, 9997505), (5, 7998004), (7, 5712860), (10, 3999002), (14, 2856430), (20, 1999501), (28, 1428215), (35, 1142572), (70, 571286), (140, 285643)]