20987435

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{5039}}^1$

素因数の和:5075

約数の個数: 24

約数和(自身を含む): 31026240

約数和(自身を除く): 10038805

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 245, 595, 833, 4165, 5039, 25195, 35273, 85663, 176365, 246911, 428315, 599641, 1234555, 2998205, 4197487, 20987435]

約数ペア:

[(1, 20987435), (5, 4197487), (7, 2998205), (17, 1234555), (35, 599641), (49, 428315), (85, 246911), (119, 176365), (245, 85663), (595, 35273), (833, 25195), (4165, 5039)]