20217879

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{293}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 34673184

約数和(自身を除く): 14455305

約数列:

[1, 3, 9, 11, 17, 33, 41, 51, 99, 123, 153, 187, 293, 369, 451, 561, 697, 879, 1353, 1683, 2091, 2637, 3223, 4059, 4981, 6273, 7667, 9669, 12013, 14943, 23001, 29007, 36039, 44829, 54791, 69003, 108117, 132143, 164373, 204221, 396429, 493119, 612663, 1189287, 1837989, 2246431, 6739293, 20217879]

約数ペア:

[(1, 20217879), (3, 6739293), (9, 2246431), (11, 1837989), (17, 1189287), (33, 612663), (41, 493119), (51, 396429), (99, 204221), (123, 164373), (153, 132143), (187, 108117), (293, 69003), (369, 54791), (451, 44829), (561, 36039), (697, 29007), (879, 23001), (1353, 14943), (1683, 12013), (2091, 9669), (2637, 7667), (3223, 6273), (4059, 4981)]