20929780

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5479}}^1$

素因数の和:5679

約数の個数: 24

約数和(自身を含む): 44190720

約数和(自身を除く): 23260940

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 5479, 10958, 21916, 27395, 54790, 109580, 1046489, 2092978, 4185956, 5232445, 10464890, 20929780]

約数ペア:

[(1, 20929780), (2, 10464890), (4, 5232445), (5, 4185956), (10, 2092978), (20, 1046489), (191, 109580), (382, 54790), (764, 27395), (955, 21916), (1910, 10958), (3820, 5479)]