21068943

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{241}}^1$

素因数の和:455

約数の個数: 32

約数和(自身を含む): 33825792

約数和(自身を除く): 12756849

約数列:

[1, 3, 7, 21, 23, 69, 161, 181, 241, 483, 543, 723, 1267, 1687, 3801, 4163, 5061, 5543, 12489, 16629, 29141, 38801, 43621, 87423, 116403, 130863, 305347, 916041, 1003283, 3009849, 7022981, 21068943]

約数ペア:

[(1, 21068943), (3, 7022981), (7, 3009849), (21, 1003283), (23, 916041), (69, 305347), (161, 130863), (181, 116403), (241, 87423), (483, 43621), (543, 38801), (723, 29141), (1267, 16629), (1687, 12489), (3801, 5543), (4163, 5061)]