21306978

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{15373}}^1$

素因数の和:15399

約数の個数: 48

約数和(自身を含む): 57560256

約数和(自身を除く): 36253278

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 33, 42, 63, 66, 77, 99, 126, 154, 198, 231, 462, 693, 1386, 15373, 30746, 46119, 92238, 107611, 138357, 169103, 215222, 276714, 322833, 338206, 507309, 645666, 968499, 1014618, 1183721, 1521927, 1936998, 2367442, 3043854, 3551163, 7102326, 10653489, 21306978]

約数ペア:

[(1, 21306978), (2, 10653489), (3, 7102326), (6, 3551163), (7, 3043854), (9, 2367442), (11, 1936998), (14, 1521927), (18, 1183721), (21, 1014618), (22, 968499), (33, 645666), (42, 507309), (63, 338206), (66, 322833), (77, 276714), (99, 215222), (126, 169103), (154, 138357), (198, 107611), (231, 92238), (462, 46119), (693, 30746), (1386, 15373)]