19847080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1049}}^1$

素因数の和:1114

約数の個数: 64

約数和(自身を含む): 49896000

約数和(自身を除く): 30048920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 1049, 1720, 1892, 2098, 2365, 3784, 4196, 4730, 5245, 8392, 9460, 10490, 11539, 18920, 20980, 23078, 41960, 45107, 46156, 57695, 90214, 92312, 115390, 180428, 225535, 230780, 360856, 451070, 461560, 496177, 902140, 992354, 1804280, 1984708, 2480885, 3969416, 4961770, 9923540, 19847080]

約数ペア:

[(1, 19847080), (2, 9923540), (4, 4961770), (5, 3969416), (8, 2480885), (10, 1984708), (11, 1804280), (20, 992354), (22, 902140), (40, 496177), (43, 461560), (44, 451070), (55, 360856), (86, 230780), (88, 225535), (110, 180428), (172, 115390), (215, 92312), (220, 90214), (344, 57695), (430, 46156), (440, 45107), (473, 41960), (860, 23078), (946, 20980), (1049, 18920), (1720, 11539), (1892, 10490), (2098, 9460), (2365, 8392), (3784, 5245), (4196, 4730)]