81857727

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{35117}}^1$

素因数の和:35167

約数の個数: 24

約数和(自身を含む): 138786336

約数和(自身を除く): 56928609

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 35117, 105351, 245819, 316053, 737457, 1299329, 2212371, 3897987, 9095303, 11693961, 27285909, 81857727]

約数ペア:

[(1, 81857727), (3, 27285909), (7, 11693961), (9, 9095303), (21, 3897987), (37, 2212371), (63, 1299329), (111, 737457), (259, 316053), (333, 245819), (777, 105351), (2331, 35117)]