20811250

素因数分解:

$2^1\times 5^4\times {\mathrm{16649}}^1$

素因数の和:16671

約数の個数: 20

約数和(自身を含む): 39010950

約数和(自身を除く): 18199700

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 16649, 33298, 83245, 166490, 416225, 832450, 2081125, 4162250, 10405625, 20811250]

約数ペア:

[(1, 20811250), (2, 10405625), (5, 4162250), (10, 2081125), (25, 832450), (50, 416225), (125, 166490), (250, 83245), (625, 33298), (1250, 16649)]