18879147

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{7309}}^1$

素因数の和:7363

約数の個数: 24

約数和(自身を含む): 31930080

約数和(自身を除く): 13050933

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 7309, 21927, 51163, 65781, 153489, 299669, 460467, 899007, 2097683, 2697021, 6293049, 18879147]

約数ペア:

[(1, 18879147), (3, 6293049), (7, 2697021), (9, 2097683), (21, 899007), (41, 460467), (63, 299669), (123, 153489), (287, 65781), (369, 51163), (861, 21927), (2583, 7309)]