8128000

素因数分解:

$2^9\times 5^3\times {\mathrm{127}}^1$

素因数の和:160

約数の個数: 80

約数和(自身を含む): 20427264

約数和(自身を除く): 12299264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 127, 128, 160, 200, 250, 254, 256, 320, 400, 500, 508, 512, 635, 640, 800, 1000, 1016, 1270, 1280, 1600, 2000, 2032, 2540, 2560, 3175, 3200, 4000, 4064, 5080, 6350, 6400, 8000, 8128, 10160, 12700, 12800, 15875, 16000, 16256, 20320, 25400, 31750, 32000, 32512, 40640, 50800, 63500, 64000, 65024, 81280, 101600, 127000, 162560, 203200, 254000, 325120, 406400, 508000, 812800, 1016000, 1625600, 2032000, 4064000, 8128000]

約数ペア:

[(1, 8128000), (2, 4064000), (4, 2032000), (5, 1625600), (8, 1016000), (10, 812800), (16, 508000), (20, 406400), (25, 325120), (32, 254000), (40, 203200), (50, 162560), (64, 127000), (80, 101600), (100, 81280), (125, 65024), (127, 64000), (128, 63500), (160, 50800), (200, 40640), (250, 32512), (254, 32000), (256, 31750), (320, 25400), (400, 20320), (500, 16256), (508, 16000), (512, 15875), (635, 12800), (640, 12700), (800, 10160), (1000, 8128), (1016, 8000), (1270, 6400), (1280, 6350), (1600, 5080), (2000, 4064), (2032, 4000), (2540, 3200), (2560, 3175)]