18996956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 38918880

約数和(自身を除く): 19921924

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 109, 187, 218, 233, 374, 436, 466, 748, 932, 1199, 1853, 2398, 2563, 3706, 3961, 4796, 5126, 7412, 7922, 10252, 15844, 20383, 25397, 40766, 43571, 50794, 81532, 87142, 101588, 174284, 279367, 431749, 558734, 863498, 1117468, 1726996, 4749239, 9498478, 18996956]

約数ペア:

[(1, 18996956), (2, 9498478), (4, 4749239), (11, 1726996), (17, 1117468), (22, 863498), (34, 558734), (44, 431749), (68, 279367), (109, 174284), (187, 101588), (218, 87142), (233, 81532), (374, 50794), (436, 43571), (466, 40766), (748, 25397), (932, 20383), (1199, 15844), (1853, 10252), (2398, 7922), (2563, 7412), (3706, 5126), (3961, 4796)]