20556985

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{733}}^1$

素因数の和:888

約数の個数: 16

約数和(自身を含む): 25367040

約数和(自身を除く): 4810055

約数列:

[1, 5, 71, 79, 355, 395, 733, 3665, 5609, 28045, 52043, 57907, 260215, 289535, 4111397, 20556985]

約数ペア:

[(1, 20556985), (5, 4111397), (71, 289535), (79, 260215), (355, 57907), (395, 52043), (733, 28045), (3665, 5609)]