2178720775

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{26321}}^1$

素因数の和:26392

約数の個数: 48

約数和(自身を含む): 3446707968

約数和(自身を除く): 1267987193

約数列:

[1, 5, 7, 11, 25, 35, 43, 55, 77, 175, 215, 275, 301, 385, 473, 1075, 1505, 1925, 2365, 3311, 7525, 11825, 16555, 26321, 82775, 131605, 184247, 289531, 658025, 921235, 1131803, 1447655, 2026717, 4606175, 5659015, 7238275, 7922621, 10133585, 12449833, 28295075, 39613105, 50667925, 62249165, 87148831, 198065525, 311245825, 435744155, 2178720775]

約数ペア:

[(1, 2178720775), (5, 435744155), (7, 311245825), (11, 198065525), (25, 87148831), (35, 62249165), (43, 50667925), (55, 39613105), (77, 28295075), (175, 12449833), (215, 10133585), (275, 7922621), (301, 7238275), (385, 5659015), (473, 4606175), (1075, 2026717), (1505, 1447655), (1925, 1131803), (2365, 921235), (3311, 658025), (7525, 289531), (11825, 184247), (16555, 131605), (26321, 82775)]