2780640009

素因数分解:

$3^6\times 7^1\times {\mathrm{544903}}^1$

素因数の和:544928

約数の個数: 28

約数和(自身を含む): 4764640576

約数和(自身を除く): 1984000567

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 5103, 544903, 1634709, 3814321, 4904127, 11442963, 14712381, 34328889, 44137143, 102986667, 132411429, 308960001, 397234287, 926880003, 2780640009]

約数ペア:

[(1, 2780640009), (3, 926880003), (7, 397234287), (9, 308960001), (21, 132411429), (27, 102986667), (63, 44137143), (81, 34328889), (189, 14712381), (243, 11442963), (567, 4904127), (729, 3814321), (1701, 1634709), (5103, 544903)]