78985775

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{26111}}^1$

素因数の和:26143

約数の個数: 18

約数和(自身を含む): 107659776

約数和(自身を除く): 28674001

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 26111, 130555, 287221, 652775, 1436105, 3159431, 7180525, 15797155, 78985775]

約数ペア:

[(1, 78985775), (5, 15797155), (11, 7180525), (25, 3159431), (55, 1436105), (121, 652775), (275, 287221), (605, 130555), (3025, 26111)]