20485199

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{521}}^1$

素因数の和:706

約数の個数: 16

約数和(自身を含む): 24204096

約数和(自身を除く): 3718897

約数列:

[1, 7, 41, 137, 287, 521, 959, 3647, 5617, 21361, 39319, 71377, 149527, 499639, 2926457, 20485199]

約数ペア:

[(1, 20485199), (7, 2926457), (41, 499639), (137, 149527), (287, 71377), (521, 39319), (959, 21361), (3647, 5617)]