20147355

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3221}}^1$

素因数の和:3371

約数の個数: 24

約数和(自身を含む): 35184240

約数和(自身を除く): 15036885

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 3221, 6255, 9663, 16105, 28989, 48315, 144945, 447719, 1343157, 2238595, 4029471, 6715785, 20147355]

約数ペア:

[(1, 20147355), (3, 6715785), (5, 4029471), (9, 2238595), (15, 1343157), (45, 447719), (139, 144945), (417, 48315), (695, 28989), (1251, 16105), (2085, 9663), (3221, 6255)]