21778254

素因数分解:

$2^1\times 3^3\times {\mathrm{403301}}^1$

素因数の和:403312

約数の個数: 16

約数和(自身を含む): 48396240

約数和(自身を除く): 26617986

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 403301, 806602, 1209903, 2419806, 3629709, 7259418, 10889127, 21778254]

約数ペア:

[(1, 21778254), (2, 10889127), (3, 7259418), (6, 3629709), (9, 2419806), (18, 1209903), (27, 806602), (54, 403301)]