21278445

素因数分解:

$3^1\times 5^1\times {\mathrm{1069}}^1\times {\mathrm{1327}}^1$

素因数の和:2404

約数の個数: 16

約数和(自身を含む): 34103040

約数和(自身を除く): 12824595

約数列:

[1, 3, 5, 15, 1069, 1327, 3207, 3981, 5345, 6635, 16035, 19905, 1418563, 4255689, 7092815, 21278445]

約数ペア:

[(1, 21278445), (3, 7092815), (5, 4255689), (15, 1418563), (1069, 19905), (1327, 16035), (3207, 6635), (3981, 5345)]