81253975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{15551}}^1$

素因数の和:15591

約数の個数: 24

約数和(自身を含む): 115706880

約数和(自身を除く): 34452905

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 5225, 15551, 77755, 171061, 295469, 388775, 855305, 1477345, 3250159, 4276525, 7386725, 16250795, 81253975]

約数ペア:

[(1, 81253975), (5, 16250795), (11, 7386725), (19, 4276525), (25, 3250159), (55, 1477345), (95, 855305), (209, 388775), (275, 295469), (475, 171061), (1045, 77755), (5225, 15551)]