21306798

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{28871}}^1$

素因数の和:28920

約数の個数: 24

約数和(自身を含む): 47292336

約数和(自身を除く): 25985538

約数列:

[1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738, 28871, 57742, 86613, 173226, 259839, 519678, 1183711, 2367422, 3551133, 7102266, 10653399, 21306798]

約数ペア:

[(1, 21306798), (2, 10653399), (3, 7102266), (6, 3551133), (9, 2367422), (18, 1183711), (41, 519678), (82, 259839), (123, 173226), (246, 86613), (369, 57742), (738, 28871)]