21085866

素因数分解:

$2^1\times 3^3\times {\mathrm{390479}}^1$

素因数の和:390490

約数の個数: 16

約数和(自身を含む): 46857600

約数和(自身を除く): 25771734

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 390479, 780958, 1171437, 2342874, 3514311, 7028622, 10542933, 21085866]

約数ペア:

[(1, 21085866), (2, 10542933), (3, 7028622), (6, 3514311), (9, 2342874), (18, 1171437), (27, 780958), (54, 390479)]