20658963

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:283

約数の個数: 32

約数和(自身を含む): 30908416

約数和(自身を除く): 10249453

約数列:

[1, 3, 13, 39, 43, 97, 127, 129, 291, 381, 559, 1261, 1651, 1677, 3783, 4171, 4953, 5461, 12319, 12513, 16383, 36957, 54223, 70993, 160147, 162669, 212979, 480441, 529717, 1589151, 6886321, 20658963]

約数ペア:

[(1, 20658963), (3, 6886321), (13, 1589151), (39, 529717), (43, 480441), (97, 212979), (127, 162669), (129, 160147), (291, 70993), (381, 54223), (559, 36957), (1261, 16383), (1651, 12513), (1677, 12319), (3783, 5461), (4171, 4953)]