21555384

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{20887}}^1$

素因数の和:20939

約数の個数: 32

約数和(自身を含む): 55144320

約数和(自身を除く): 33588936

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 172, 258, 344, 516, 1032, 20887, 41774, 62661, 83548, 125322, 167096, 250644, 501288, 898141, 1796282, 2694423, 3592564, 5388846, 7185128, 10777692, 21555384]

約数ペア:

[(1, 21555384), (2, 10777692), (3, 7185128), (4, 5388846), (6, 3592564), (8, 2694423), (12, 1796282), (24, 898141), (43, 501288), (86, 250644), (129, 167096), (172, 125322), (258, 83548), (344, 62661), (516, 41774), (1032, 20887)]