81975861

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 142080000

約数和(自身を除く): 60104139

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 73, 99, 171, 199, 209, 219, 297, 513, 597, 627, 657, 803, 1387, 1791, 1881, 1971, 2189, 2409, 3781, 4161, 5373, 5643, 6567, 7227, 11343, 12483, 14527, 15257, 19701, 21681, 34029, 37449, 41591, 43581, 45771, 59103, 102087, 124773, 130743, 137313, 159797, 276013, 374319, 392229, 411939, 479391, 828039, 1122957, 1438173, 2484117, 3036143, 4314519, 7452351, 9108429, 27325287, 81975861]

約数ペア:

[(1, 81975861), (3, 27325287), (9, 9108429), (11, 7452351), (19, 4314519), (27, 3036143), (33, 2484117), (57, 1438173), (73, 1122957), (99, 828039), (171, 479391), (199, 411939), (209, 392229), (219, 374319), (297, 276013), (513, 159797), (597, 137313), (627, 130743), (657, 124773), (803, 102087), (1387, 59103), (1791, 45771), (1881, 43581), (1971, 41591), (2189, 37449), (2409, 34029), (3781, 21681), (4161, 19701), (5373, 15257), (5643, 14527), (6567, 12483), (7227, 11343)]