128412621

素因数分解:

$3^6\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:237

約数の個数: 56

約数和(自身を含む): 207057920

約数和(自身を除く): 78645299

約数列:

[1, 3, 9, 19, 27, 57, 73, 81, 127, 171, 219, 243, 381, 513, 657, 729, 1143, 1387, 1539, 1971, 2413, 3429, 4161, 4617, 5913, 7239, 9271, 10287, 12483, 13851, 17739, 21717, 27813, 30861, 37449, 53217, 65151, 83439, 92583, 112347, 176149, 195453, 250317, 337041, 528447, 586359, 750951, 1011123, 1585341, 1759077, 2252853, 4756023, 6758559, 14268069, 42804207, 128412621]

約数ペア:

[(1, 128412621), (3, 42804207), (9, 14268069), (19, 6758559), (27, 4756023), (57, 2252853), (73, 1759077), (81, 1585341), (127, 1011123), (171, 750951), (219, 586359), (243, 528447), (381, 337041), (513, 250317), (657, 195453), (729, 176149), (1143, 112347), (1387, 92583), (1539, 83439), (1971, 65151), (2413, 53217), (3429, 37449), (4161, 30861), (4617, 27813), (5913, 21717), (7239, 17739), (9271, 13851), (10287, 12483)]