21143487

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1\times {\mathrm{653}}^1$

素因数の和:950

約数の個数: 16

約数和(自身を含む): 29006208

約数和(自身を除く): 7862721

約数列:

[1, 3, 43, 129, 251, 653, 753, 1959, 10793, 28079, 32379, 84237, 163903, 491709, 7047829, 21143487]

約数ペア:

[(1, 21143487), (3, 7047829), (43, 491709), (129, 163903), (251, 84237), (653, 32379), (753, 28079), (1959, 10793)]