20171673

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 33808320

約数和(自身を除く): 13636647

約数列:

[1, 3, 9, 17, 19, 27, 51, 57, 81, 153, 171, 243, 257, 323, 459, 513, 771, 969, 1377, 1539, 2313, 2907, 4131, 4369, 4617, 4883, 6939, 8721, 13107, 14649, 20817, 26163, 39321, 43947, 62451, 78489, 83011, 117963, 131841, 249033, 353889, 395523, 747099, 1061667, 1186569, 2241297, 6723891, 20171673]

約数ペア:

[(1, 20171673), (3, 6723891), (9, 2241297), (17, 1186569), (19, 1061667), (27, 747099), (51, 395523), (57, 353889), (81, 249033), (153, 131841), (171, 117963), (243, 83011), (257, 78489), (323, 62451), (459, 43947), (513, 39321), (771, 26163), (969, 20817), (1377, 14649), (1539, 13107), (2313, 8721), (2907, 6939), (4131, 4883), (4369, 4617)]