21280374

素因数分解:

$2^1\times 3^3\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:274

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 28486026

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 54, 58, 87, 107, 127, 174, 214, 254, 261, 321, 381, 522, 642, 762, 783, 963, 1143, 1566, 1926, 2286, 2889, 3103, 3429, 3683, 5778, 6206, 6858, 7366, 9309, 11049, 13589, 18618, 22098, 27178, 27927, 33147, 40767, 55854, 66294, 81534, 83781, 99441, 122301, 167562, 198882, 244602, 366903, 394081, 733806, 788162, 1182243, 2364486, 3546729, 7093458, 10640187, 21280374]

約数ペア:

[(1, 21280374), (2, 10640187), (3, 7093458), (6, 3546729), (9, 2364486), (18, 1182243), (27, 788162), (29, 733806), (54, 394081), (58, 366903), (87, 244602), (107, 198882), (127, 167562), (174, 122301), (214, 99441), (254, 83781), (261, 81534), (321, 66294), (381, 55854), (522, 40767), (642, 33147), (762, 27927), (783, 27178), (963, 22098), (1143, 18618), (1566, 13589), (1926, 11049), (2286, 9309), (2889, 7366), (3103, 6858), (3429, 6206), (3683, 5778)]