12289887

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{2137}}^1$

素因数の和:2220

約数の個数: 20

約数和(自身を含む): 18626256

約数和(自身を除く): 6336369

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 2137, 5751, 6411, 19233, 57699, 151727, 173097, 455181, 1365543, 4096629, 12289887]

約数ペア:

[(1, 12289887), (3, 4096629), (9, 1365543), (27, 455181), (71, 173097), (81, 151727), (213, 57699), (639, 19233), (1917, 6411), (2137, 5751)]