19898180

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6337}}^1$

素因数の和:6503

約数の個数: 24

約数和(自身を含む): 42058968

約数和(自身を除く): 22160788

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6337, 12674, 25348, 31685, 63370, 126740, 994909, 1989818, 3979636, 4974545, 9949090, 19898180]

約数ペア:

[(1, 19898180), (2, 9949090), (4, 4974545), (5, 3979636), (10, 1989818), (20, 994909), (157, 126740), (314, 63370), (628, 31685), (785, 25348), (1570, 12674), (3140, 6337)]