19955442

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{255839}}^1$

素因数の和:255857

約数の個数: 16

約数和(自身を含む): 42981120

約数和(自身を除く): 23025678

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 255839, 511678, 767517, 1535034, 3325907, 6651814, 9977721, 19955442]

約数ペア:

[(1, 19955442), (2, 9977721), (3, 6651814), (6, 3325907), (13, 1535034), (26, 767517), (39, 511678), (78, 255839)]