21118955

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29537}}^1$

素因数の和:29566

約数の個数: 16

約数和(自身を含む): 29774304

約数和(自身を除く): 8655349

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 29537, 147685, 324907, 383981, 1624535, 1919905, 4223791, 21118955]

約数ペア:

[(1, 21118955), (5, 4223791), (11, 1919905), (13, 1624535), (55, 383981), (65, 324907), (143, 147685), (715, 29537)]