20728085

素因数分解:

$5^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{1319}}^1$

素因数の和:1780

約数の個数: 16

約数和(自身を含む): 28512000

約数和(自身を除く): 7783915

約数列:

[1, 5, 7, 35, 449, 1319, 2245, 3143, 6595, 9233, 15715, 46165, 592231, 2961155, 4145617, 20728085]

約数ペア:

[(1, 20728085), (5, 4145617), (7, 2961155), (35, 592231), (449, 46165), (1319, 15715), (2245, 9233), (3143, 6595)]