128728000

素因数分解:

$2^6\times 5^3\times {\mathrm{16091}}^1$

素因数の和:16118

約数の個数: 56

約数和(自身を含む): 318814704

約数和(自身を除く): 190086704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 800, 1000, 1600, 2000, 4000, 8000, 16091, 32182, 64364, 80455, 128728, 160910, 257456, 321820, 402275, 514912, 643640, 804550, 1029824, 1287280, 1609100, 2011375, 2574560, 3218200, 4022750, 5149120, 6436400, 8045500, 12872800, 16091000, 25745600, 32182000, 64364000, 128728000]

約数ペア:

[(1, 128728000), (2, 64364000), (4, 32182000), (5, 25745600), (8, 16091000), (10, 12872800), (16, 8045500), (20, 6436400), (25, 5149120), (32, 4022750), (40, 3218200), (50, 2574560), (64, 2011375), (80, 1609100), (100, 1287280), (125, 1029824), (160, 804550), (200, 643640), (250, 514912), (320, 402275), (400, 321820), (500, 257456), (800, 160910), (1000, 128728), (1600, 80455), (2000, 64364), (4000, 32182), (8000, 16091)]