18408014780

素因数分解:

$2^2\times 5^1\times {\mathrm{920400739}}^1$

素因数の和:920400748

約数の個数: 12

約数和(自身を含む): 38656831080

約数和(自身を除く): 20248816300

約数列:

[1, 2, 4, 5, 10, 20, 920400739, 1840801478, 3681602956, 4602003695, 9204007390, 18408014780]

約数ペア:

[(1, 18408014780), (2, 9204007390), (4, 4602003695), (5, 3681602956), (10, 1840801478), (20, 920400739)]