19990828

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{34949}}^1$

素因数の和:34977

約数の個数: 24

約数和(自身を含む): 41101200

約数和(自身を除く): 21110372

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 286, 572, 34949, 69898, 139796, 384439, 454337, 768878, 908674, 1537756, 1817348, 4997707, 9995414, 19990828]

約数ペア:

[(1, 19990828), (2, 9995414), (4, 4997707), (11, 1817348), (13, 1537756), (22, 908674), (26, 768878), (44, 454337), (52, 384439), (143, 139796), (286, 69898), (572, 34949)]