20808856

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{18713}}^1$

素因数の和:18858

約数の個数: 16

約数和(自身を含む): 39299400

約数和(自身を除く): 18490544

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 18713, 37426, 74852, 149704, 2601107, 5202214, 10404428, 20808856]

約数ペア:

[(1, 20808856), (2, 10404428), (4, 5202214), (8, 2601107), (139, 149704), (278, 74852), (556, 37426), (1112, 18713)]