81975025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{541}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 120974400

約数和(自身を除く): 38999375

約数列:

[1, 5, 11, 19, 25, 29, 55, 95, 145, 209, 275, 319, 475, 541, 551, 725, 1045, 1595, 2705, 2755, 5225, 5951, 6061, 7975, 10279, 13525, 13775, 15689, 29755, 30305, 51395, 78445, 113069, 148775, 151525, 172579, 256975, 298091, 392225, 565345, 862895, 1490455, 2826725, 3279001, 4314475, 7452275, 16395005, 81975025]

約数ペア:

[(1, 81975025), (5, 16395005), (11, 7452275), (19, 4314475), (25, 3279001), (29, 2826725), (55, 1490455), (95, 862895), (145, 565345), (209, 392225), (275, 298091), (319, 256975), (475, 172579), (541, 151525), (551, 148775), (725, 113069), (1045, 78445), (1595, 51395), (2705, 30305), (2755, 29755), (5225, 15689), (5951, 13775), (6061, 13525), (7975, 10279)]