21247866

素因数分解:

$2^1\times 3^3\times {\mathrm{393479}}^1$

素因数の和:393490

約数の個数: 16

約数和(自身を含む): 47217600

約数和(自身を除く): 25969734

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 393479, 786958, 1180437, 2360874, 3541311, 7082622, 10623933, 21247866]

約数ペア:

[(1, 21247866), (2, 10623933), (3, 7082622), (6, 3541311), (9, 2360874), (18, 1180437), (27, 786958), (54, 393479)]