390418180

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{124337}}^1$

素因数の和:124503

約数の個数: 24

約数和(自身を含む): 825106968

約数和(自身を除く): 434688788

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 124337, 248674, 497348, 621685, 1243370, 2486740, 19520909, 39041818, 78083636, 97604545, 195209090, 390418180]

約数ペア:

[(1, 390418180), (2, 195209090), (4, 97604545), (5, 78083636), (10, 39041818), (20, 19520909), (157, 2486740), (314, 1243370), (628, 621685), (785, 497348), (1570, 248674), (3140, 124337)]