20906555

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{229}}^1$

素因数の和:315

約数の個数: 24

約数和(自身を含む): 27406800

約数和(自身を除く): 6500245

約数列:

[1, 5, 19, 31, 95, 155, 229, 589, 961, 1145, 2945, 4351, 4805, 7099, 18259, 21755, 35495, 91295, 134881, 220069, 674405, 1100345, 4181311, 20906555]

約数ペア:

[(1, 20906555), (5, 4181311), (19, 1100345), (31, 674405), (95, 220069), (155, 134881), (229, 91295), (589, 35495), (961, 21755), (1145, 18259), (2945, 7099), (4351, 4805)]