20510215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{1033}}^1$

素因数の和:1087

約数の個数: 24

約数和(自身を含む): 28364688

約数和(自身を除く): 7854473

約数列:

[1, 5, 11, 19, 55, 95, 209, 361, 1033, 1045, 1805, 3971, 5165, 11363, 19627, 19855, 56815, 98135, 215897, 372913, 1079485, 1864565, 4102043, 20510215]

約数ペア:

[(1, 20510215), (5, 4102043), (11, 1864565), (19, 1079485), (55, 372913), (95, 215897), (209, 98135), (361, 56815), (1033, 19855), (1045, 19627), (1805, 11363), (3971, 5165)]