19847495

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{521}}^1$

素因数の和:946

約数の個数: 16

約数和(自身を含む): 25181280

約数和(自身を除く): 5333785

約数列:

[1, 5, 19, 95, 401, 521, 2005, 2605, 7619, 9899, 38095, 49495, 208921, 1044605, 3969499, 19847495]

約数ペア:

[(1, 19847495), (5, 3969499), (19, 1044605), (95, 208921), (401, 49495), (521, 38095), (2005, 9899), (2605, 7619)]