21189136

素因数分解:

$2^4\times {\mathrm{257}}^1\times {\mathrm{5153}}^1$

素因数の和:5418

約数の個数: 20

約数和(自身を含む): 41221692

約数和(自身を除く): 20032556

約数列:

[1, 2, 4, 8, 16, 257, 514, 1028, 2056, 4112, 5153, 10306, 20612, 41224, 82448, 1324321, 2648642, 5297284, 10594568, 21189136]

約数ペア:

[(1, 21189136), (2, 10594568), (4, 5297284), (8, 2648642), (16, 1324321), (257, 82448), (514, 41224), (1028, 20612), (2056, 10306), (4112, 5153)]