2809521

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:126

約数の個数: 48

約数和(自身を含む): 4979520

約数和(自身を除く): 2169999

約数列:

[1, 3, 9, 11, 13, 33, 37, 39, 59, 99, 111, 117, 143, 177, 333, 407, 429, 481, 531, 649, 767, 1221, 1287, 1443, 1947, 2183, 2301, 3663, 4329, 5291, 5841, 6549, 6903, 8437, 15873, 19647, 24013, 25311, 28379, 47619, 72039, 75933, 85137, 216117, 255411, 312169, 936507, 2809521]

約数ペア:

[(1, 2809521), (3, 936507), (9, 312169), (11, 255411), (13, 216117), (33, 85137), (37, 75933), (39, 72039), (59, 47619), (99, 28379), (111, 25311), (117, 24013), (143, 19647), (177, 15873), (333, 8437), (407, 6903), (429, 6549), (481, 5841), (531, 5291), (649, 4329), (767, 3663), (1221, 2301), (1287, 2183), (1443, 1947)]