20668655

素因数分解:

$5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{5519}}^1$

素因数の和:5638

約数の個数: 16

約数和(自身を含む): 28615680

約数和(自身を除く): 7947025

約数列:

[1, 5, 7, 35, 107, 535, 749, 3745, 5519, 27595, 38633, 193165, 590533, 2952665, 4133731, 20668655]

約数ペア:

[(1, 20668655), (5, 4133731), (7, 2952665), (35, 590533), (107, 193165), (535, 38633), (749, 27595), (3745, 5519)]