20145500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{937}}^1$

素因数の和:999

約数の個数: 48

約数和(自身を含む): 45069024

約数和(自身を除く): 24923524

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 125, 172, 215, 250, 430, 500, 860, 937, 1075, 1874, 2150, 3748, 4300, 4685, 5375, 9370, 10750, 18740, 21500, 23425, 40291, 46850, 80582, 93700, 117125, 161164, 201455, 234250, 402910, 468500, 805820, 1007275, 2014550, 4029100, 5036375, 10072750, 20145500]

約数ペア:

[(1, 20145500), (2, 10072750), (4, 5036375), (5, 4029100), (10, 2014550), (20, 1007275), (25, 805820), (43, 468500), (50, 402910), (86, 234250), (100, 201455), (125, 161164), (172, 117125), (215, 93700), (250, 80582), (430, 46850), (500, 40291), (860, 23425), (937, 21500), (1075, 18740), (1874, 10750), (2150, 9370), (3748, 5375), (4300, 4685)]