20647755

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3301}}^1$

素因数の和:3451

約数の個数: 24

約数和(自身を含む): 36057840

約数和(自身を除く): 15410085

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 3301, 6255, 9903, 16505, 29709, 49515, 148545, 458839, 1376517, 2294195, 4129551, 6882585, 20647755]

約数ペア:

[(1, 20647755), (3, 6882585), (5, 4129551), (9, 2294195), (15, 1376517), (45, 458839), (139, 148545), (417, 49515), (695, 29709), (1251, 16505), (2085, 9903), (3301, 6255)]