20691208

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{38603}}^1$

素因数の和:38676

約数の個数: 16

約数和(自身を含む): 39376080

約数和(自身を除く): 18684872

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 38603, 77206, 154412, 308824, 2586401, 5172802, 10345604, 20691208]

約数ペア:

[(1, 20691208), (2, 10345604), (4, 5172802), (8, 2586401), (67, 308824), (134, 154412), (268, 77206), (536, 38603)]