19788215

素因数分解:

$5^1\times {\mathrm{19}}^3\times {\mathrm{577}}^1$

素因数の和:639

約数の個数: 16

約数和(自身を含む): 25108320

約数和(自身を除く): 5320105

約数列:

[1, 5, 19, 95, 361, 577, 1805, 2885, 6859, 10963, 34295, 54815, 208297, 1041485, 3957643, 19788215]

約数ペア:

[(1, 19788215), (5, 3957643), (19, 1041485), (95, 208297), (361, 54815), (577, 34295), (1805, 10963), (2885, 6859)]