21785463

素因数分解:

$3^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1579}}^1$

素因数の和:1668

約数の個数: 32

約数和(自身を含む): 37414400

約数和(自身を除く): 15628937

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 189, 219, 511, 657, 1533, 1579, 1971, 4599, 4737, 11053, 13797, 14211, 33159, 42633, 99477, 115267, 298431, 345801, 806869, 1037403, 2420607, 3112209, 7261821, 21785463]

約数ペア:

[(1, 21785463), (3, 7261821), (7, 3112209), (9, 2420607), (21, 1037403), (27, 806869), (63, 345801), (73, 298431), (189, 115267), (219, 99477), (511, 42633), (657, 33159), (1533, 14211), (1579, 13797), (1971, 11053), (4599, 4737)]