19857981

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1129}}^1$

素因数の和:1197

約数の個数: 32

約数和(自身を含む): 31893120

約数和(自身を除く): 12035139

約数列:

[1, 3, 11, 13, 33, 39, 41, 123, 143, 429, 451, 533, 1129, 1353, 1599, 3387, 5863, 12419, 14677, 17589, 37257, 44031, 46289, 138867, 161447, 484341, 509179, 601757, 1527537, 1805271, 6619327, 19857981]

約数ペア:

[(1, 19857981), (3, 6619327), (11, 1805271), (13, 1527537), (33, 601757), (39, 509179), (41, 484341), (123, 161447), (143, 138867), (429, 46289), (451, 44031), (533, 37257), (1129, 17589), (1353, 14677), (1599, 12419), (3387, 5863)]