12891555

素因数分解:

$3^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:385

約数の個数: 40

約数和(自身を含む): 23377200

約数和(自身を除く): 10485645

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 139, 229, 405, 417, 687, 695, 1145, 1251, 2061, 2085, 3435, 3753, 6183, 6255, 10305, 11259, 18549, 18765, 30915, 31831, 56295, 92745, 95493, 159155, 286479, 477465, 859437, 1432395, 2578311, 4297185, 12891555]

約数ペア:

[(1, 12891555), (3, 4297185), (5, 2578311), (9, 1432395), (15, 859437), (27, 477465), (45, 286479), (81, 159155), (135, 95493), (139, 92745), (229, 56295), (405, 31831), (417, 30915), (687, 18765), (695, 18549), (1145, 11259), (1251, 10305), (2061, 6255), (2085, 6183), (3435, 3753)]