21331863

素因数分解:

$3^3\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1913}}^1$

素因数の和:1988

約数の個数: 32

約数和(自身を含む): 36748800

約数和(自身を除く): 15416937

約数列:

[1, 3, 7, 9, 21, 27, 59, 63, 177, 189, 413, 531, 1239, 1593, 1913, 3717, 5739, 11151, 13391, 17217, 40173, 51651, 112867, 120519, 338601, 361557, 790069, 1015803, 2370207, 3047409, 7110621, 21331863]

約数ペア:

[(1, 21331863), (3, 7110621), (7, 3047409), (9, 2370207), (21, 1015803), (27, 790069), (59, 361557), (63, 338601), (177, 120519), (189, 112867), (413, 51651), (531, 40173), (1239, 17217), (1593, 13391), (1913, 11151), (3717, 5739)]