20668869

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:266

約数の個数: 36

約数和(自身を含む): 32887296

約数和(自身を除く): 12218427

約数列:

[1, 3, 9, 13, 39, 107, 117, 127, 169, 321, 381, 507, 963, 1143, 1391, 1521, 1651, 4173, 4953, 12519, 13589, 14859, 18083, 21463, 40767, 54249, 64389, 122301, 162747, 176657, 193167, 529971, 1589913, 2296541, 6889623, 20668869]

約数ペア:

[(1, 20668869), (3, 6889623), (9, 2296541), (13, 1589913), (39, 529971), (107, 193167), (117, 176657), (127, 162747), (169, 122301), (321, 64389), (381, 54249), (507, 40767), (963, 21463), (1143, 18083), (1391, 14859), (1521, 13589), (1651, 12519), (4173, 4953)]