81172161

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3989}}^1$

素因数の和:4038

約数の個数: 48

約数和(自身を含む): 149385600

約数和(自身を除く): 68213439

約数列:

[1, 3, 7, 9, 17, 19, 21, 51, 57, 63, 119, 133, 153, 171, 323, 357, 399, 969, 1071, 1197, 2261, 2907, 3989, 6783, 11967, 20349, 27923, 35901, 67813, 75791, 83769, 203439, 227373, 251307, 474691, 530537, 610317, 682119, 1288447, 1424073, 1591611, 3865341, 4272219, 4774833, 9019129, 11596023, 27057387, 81172161]

約数ペア:

[(1, 81172161), (3, 27057387), (7, 11596023), (9, 9019129), (17, 4774833), (19, 4272219), (21, 3865341), (51, 1591611), (57, 1424073), (63, 1288447), (119, 682119), (133, 610317), (153, 530537), (171, 474691), (323, 251307), (357, 227373), (399, 203439), (969, 83769), (1071, 75791), (1197, 67813), (2261, 35901), (2907, 27923), (3989, 20349), (6783, 11967)]