21292568

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:408

約数の個数: 64

約数和(自身を含む): 47329920

約数和(自身を除く): 26037352

約数列:

[1, 2, 4, 8, 11, 17, 22, 34, 43, 44, 68, 86, 88, 136, 172, 187, 331, 344, 374, 473, 662, 731, 748, 946, 1324, 1462, 1496, 1892, 2648, 2924, 3641, 3784, 5627, 5848, 7282, 8041, 11254, 14233, 14564, 16082, 22508, 28466, 29128, 32164, 45016, 56932, 61897, 64328, 113864, 123794, 156563, 241961, 247588, 313126, 483922, 495176, 626252, 967844, 1252504, 1935688, 2661571, 5323142, 10646284, 21292568]

約数ペア:

[(1, 21292568), (2, 10646284), (4, 5323142), (8, 2661571), (11, 1935688), (17, 1252504), (22, 967844), (34, 626252), (43, 495176), (44, 483922), (68, 313126), (86, 247588), (88, 241961), (136, 156563), (172, 123794), (187, 113864), (331, 64328), (344, 61897), (374, 56932), (473, 45016), (662, 32164), (731, 29128), (748, 28466), (946, 22508), (1324, 16082), (1462, 14564), (1496, 14233), (1892, 11254), (2648, 8041), (2924, 7282), (3641, 5848), (3784, 5627)]