20665855

素因数分解:

$5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{5417}}^1$

素因数の和:5538

約数の個数: 16

約数和(自身を含む): 28607040

約数和(自身を除く): 7941185

約数列:

[1, 5, 7, 35, 109, 545, 763, 3815, 5417, 27085, 37919, 189595, 590453, 2952265, 4133171, 20665855]

約数ペア:

[(1, 20665855), (5, 4133171), (7, 2952265), (35, 590453), (109, 189595), (545, 37919), (763, 27085), (3815, 5417)]