28101313420

素因数分解:

$2^2\times 5^1\times {\mathrm{1405065671}}^1$

素因数の和:1405065680

約数の個数: 12

約数和(自身を含む): 59012758224

約数和(自身を除く): 30911444804

約数列:

[1, 2, 4, 5, 10, 20, 1405065671, 2810131342, 5620262684, 7025328355, 14050656710, 28101313420]

約数ペア:

[(1, 28101313420), (2, 14050656710), (4, 7025328355), (5, 5620262684), (10, 2810131342), (20, 1405065671)]