28108197

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 46254208

約数和(自身を除く): 18146011

約数列:

[1, 3, 9, 13, 37, 39, 43, 111, 117, 129, 151, 333, 387, 453, 481, 559, 1359, 1443, 1591, 1677, 1963, 4329, 4773, 5031, 5587, 5889, 6493, 14319, 16761, 17667, 19479, 20683, 50283, 58437, 62049, 72631, 84409, 186147, 217893, 240241, 253227, 653679, 720723, 759681, 2162169, 3123133, 9369399, 28108197]

約数ペア:

[(1, 28108197), (3, 9369399), (9, 3123133), (13, 2162169), (37, 759681), (39, 720723), (43, 653679), (111, 253227), (117, 240241), (129, 217893), (151, 186147), (333, 84409), (387, 72631), (453, 62049), (481, 58437), (559, 50283), (1359, 20683), (1443, 19479), (1591, 17667), (1677, 16761), (1963, 14319), (4329, 6493), (4773, 5889), (5031, 5587)]