19880620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23117}}^1$

素因数の和:23169

約数の個数: 24

約数和(自身を含む): 42722064

約数和(自身を除く): 22841444

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23117, 46234, 92468, 115585, 231170, 462340, 994031, 1988062, 3976124, 4970155, 9940310, 19880620]

約数ペア:

[(1, 19880620), (2, 9940310), (4, 4970155), (5, 3976124), (10, 1988062), (20, 994031), (43, 462340), (86, 231170), (172, 115585), (215, 92468), (430, 46234), (860, 23117)]