12981717

素因数分解:

$3^2\times 7^2\times {\mathrm{29437}}^1$

素因数の和:29457

約数の個数: 18

約数和(自身を含む): 21813558

約数和(自身を除く): 8831841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 29437, 88311, 206059, 264933, 618177, 1442413, 1854531, 4327239, 12981717]

約数ペア:

[(1, 12981717), (3, 4327239), (7, 1854531), (9, 1442413), (21, 618177), (49, 264933), (63, 206059), (147, 88311), (441, 29437)]