72880000

素因数分解:

$2^7\times 5^4\times {\mathrm{911}}^1$

素因数の和:945

約数の個数: 80

約数和(自身を含む): 181629360

約数和(自身を除く): 108749360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 625, 640, 800, 911, 1000, 1250, 1600, 1822, 2000, 2500, 3200, 3644, 4000, 4555, 5000, 7288, 8000, 9110, 10000, 14576, 16000, 18220, 20000, 22775, 29152, 36440, 40000, 45550, 58304, 72880, 80000, 91100, 113875, 116608, 145760, 182200, 227750, 291520, 364400, 455500, 569375, 583040, 728800, 911000, 1138750, 1457600, 1822000, 2277500, 2915200, 3644000, 4555000, 7288000, 9110000, 14576000, 18220000, 36440000, 72880000]

約数ペア:

[(1, 72880000), (2, 36440000), (4, 18220000), (5, 14576000), (8, 9110000), (10, 7288000), (16, 4555000), (20, 3644000), (25, 2915200), (32, 2277500), (40, 1822000), (50, 1457600), (64, 1138750), (80, 911000), (100, 728800), (125, 583040), (128, 569375), (160, 455500), (200, 364400), (250, 291520), (320, 227750), (400, 182200), (500, 145760), (625, 116608), (640, 113875), (800, 91100), (911, 80000), (1000, 72880), (1250, 58304), (1600, 45550), (1822, 40000), (2000, 36440), (2500, 29152), (3200, 22775), (3644, 20000), (4000, 18220), (4555, 16000), (5000, 14576), (7288, 10000), (8000, 9110)]