18716980

素因数分解:

$2^2\times 5^1\times {\mathrm{337}}^1\times {\mathrm{2777}}^1$

素因数の和:3123

約数の個数: 24

約数和(自身を含む): 39436488

約数和(自身を除く): 20719508

約数列:

[1, 2, 4, 5, 10, 20, 337, 674, 1348, 1685, 2777, 3370, 5554, 6740, 11108, 13885, 27770, 55540, 935849, 1871698, 3743396, 4679245, 9358490, 18716980]

約数ペア:

[(1, 18716980), (2, 9358490), (4, 4679245), (5, 3743396), (10, 1871698), (20, 935849), (337, 55540), (674, 27770), (1348, 13885), (1685, 11108), (2777, 6740), (3370, 5554)]