19718105

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{18869}}^1$

素因数の和:18904

約数の個数: 16

約数和(自身を含む): 27172800

約数和(自身を除く): 7454695

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 18869, 94345, 207559, 358511, 1037795, 1792555, 3943621, 19718105]

約数ペア:

[(1, 19718105), (5, 3943621), (11, 1792555), (19, 1037795), (55, 358511), (95, 207559), (209, 94345), (1045, 18869)]