20537540

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{2909}}^1$

素因数の和:3271

約数の個数: 24

約数和(自身を含む): 43265880

約数和(自身を除く): 22728340

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 2909, 3530, 5818, 7060, 11636, 14545, 29090, 58180, 1026877, 2053754, 4107508, 5134385, 10268770, 20537540]

約数ペア:

[(1, 20537540), (2, 10268770), (4, 5134385), (5, 4107508), (10, 2053754), (20, 1026877), (353, 58180), (706, 29090), (1412, 14545), (1765, 11636), (2909, 7060), (3530, 5818)]