20697467

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{509}}^1$

素因数の和:710

約数の個数: 16

約数和(自身を含む): 24496320

約数和(自身を除く): 3798853

約数列:

[1, 7, 37, 157, 259, 509, 1099, 3563, 5809, 18833, 40663, 79913, 131831, 559391, 2956781, 20697467]

約数ペア:

[(1, 20697467), (7, 2956781), (37, 559391), (157, 131831), (259, 79913), (509, 40663), (1099, 18833), (3563, 5809)]