19802637

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:299

約数の個数: 40

約数和(自身を含む): 31912056

約数和(自身を除く): 12109419

約数列:

[1, 3, 9, 17, 27, 51, 73, 81, 153, 197, 219, 459, 591, 657, 1241, 1377, 1773, 1971, 3349, 3723, 5319, 5913, 10047, 11169, 14381, 15957, 30141, 33507, 43143, 90423, 100521, 129429, 244477, 271269, 388287, 733431, 1164861, 2200293, 6600879, 19802637]

約数ペア:

[(1, 19802637), (3, 6600879), (9, 2200293), (17, 1164861), (27, 733431), (51, 388287), (73, 271269), (81, 244477), (153, 129429), (197, 100521), (219, 90423), (459, 43143), (591, 33507), (657, 30141), (1241, 15957), (1377, 14381), (1773, 11169), (1971, 10047), (3349, 5913), (3723, 5319)]