19985589

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{587}}^1$

素因数の和:706

約数の個数: 32

約数和(自身を含む): 32269440

約数和(自身を除く): 12283851

約数列:

[1, 3, 9, 13, 27, 39, 97, 117, 291, 351, 587, 873, 1261, 1761, 2619, 3783, 5283, 7631, 11349, 15849, 22893, 34047, 56939, 68679, 170817, 206037, 512451, 740207, 1537353, 2220621, 6661863, 19985589]

約数ペア:

[(1, 19985589), (3, 6661863), (9, 2220621), (13, 1537353), (27, 740207), (39, 512451), (97, 206037), (117, 170817), (291, 68679), (351, 56939), (587, 34047), (873, 22893), (1261, 15849), (1761, 11349), (2619, 7631), (3783, 5283)]