20778018905

素因数分解:

$5^1\times 7^1\times {\mathrm{7727}}^1\times {\mathrm{76829}}^1$

素因数の和:84568

約数の個数: 16

約数和(自身を含む): 28499627520

約数和(自身を除く): 7721608615

約数列:

[1, 5, 7, 35, 7727, 38635, 54089, 76829, 270445, 384145, 537803, 2689015, 593657683, 2968288415, 4155603781, 20778018905]

約数ペア:

[(1, 20778018905), (5, 4155603781), (7, 2968288415), (35, 593657683), (7727, 2689015), (38635, 537803), (54089, 384145), (76829, 270445)]