28090725

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{613}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 51163392

約数和(自身を除く): 23072667

約数列:

[1, 3, 5, 13, 15, 25, 39, 47, 65, 75, 141, 195, 235, 325, 611, 613, 705, 975, 1175, 1833, 1839, 3055, 3065, 3525, 7969, 9165, 9195, 15275, 15325, 23907, 28811, 39845, 45825, 45975, 86433, 119535, 144055, 199225, 374543, 432165, 597675, 720275, 1123629, 1872715, 2160825, 5618145, 9363575, 28090725]

約数ペア:

[(1, 28090725), (3, 9363575), (5, 5618145), (13, 2160825), (15, 1872715), (25, 1123629), (39, 720275), (47, 597675), (65, 432165), (75, 374543), (141, 199225), (195, 144055), (235, 119535), (325, 86433), (611, 45975), (613, 45825), (705, 39845), (975, 28811), (1175, 23907), (1833, 15325), (1839, 15275), (3055, 9195), (3065, 9165), (3525, 7969)]