31920561

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:275

約数の個数: 40

約数和(自身を含む): 50181120

約数和(自身を除く): 18260559

約数列:

[1, 3, 9, 27, 29, 81, 87, 107, 127, 261, 321, 381, 783, 963, 1143, 2349, 2889, 3103, 3429, 3683, 8667, 9309, 10287, 11049, 13589, 27927, 33147, 40767, 83781, 99441, 122301, 251343, 298323, 366903, 394081, 1100709, 1182243, 3546729, 10640187, 31920561]

約数ペア:

[(1, 31920561), (3, 10640187), (9, 3546729), (27, 1182243), (29, 1100709), (81, 394081), (87, 366903), (107, 298323), (127, 251343), (261, 122301), (321, 99441), (381, 83781), (783, 40767), (963, 33147), (1143, 27927), (2349, 13589), (2889, 11049), (3103, 10287), (3429, 9309), (3683, 8667)]