18508082140

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1127167}}^1$

素因数の和:1127997

約数の個数: 24

約数和(自身を含む): 38914348032

約数和(自身を除く): 20406265892

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 3284, 4105, 8210, 16420, 1127167, 2254334, 4508668, 5635835, 11271670, 22543340, 925404107, 1850808214, 3701616428, 4627020535, 9254041070, 18508082140]

約数ペア:

[(1, 18508082140), (2, 9254041070), (4, 4627020535), (5, 3701616428), (10, 1850808214), (20, 925404107), (821, 22543340), (1642, 11271670), (3284, 5635835), (4105, 4508668), (8210, 2254334), (16420, 1127167)]