12971889

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10837}}^1$

素因数の和:10869

約数の個数: 24

約数和(自身を含む): 22543040

約数和(自身を除く): 9571151

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 10837, 32511, 75859, 97533, 205903, 227577, 617709, 682731, 1441321, 1853127, 4323963, 12971889]

約数ペア:

[(1, 12971889), (3, 4323963), (7, 1853127), (9, 1441321), (19, 682731), (21, 617709), (57, 227577), (63, 205903), (133, 97533), (171, 75859), (399, 32511), (1197, 10837)]