79916800

素因数分解:

$2^8\times 5^2\times {\mathrm{12487}}^1$

素因数の和:12513

約数の個数: 54

約数和(自身を含む): 197822408

約数和(自身を除く): 117905608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 6400, 12487, 24974, 49948, 62435, 99896, 124870, 199792, 249740, 312175, 399584, 499480, 624350, 799168, 998960, 1248700, 1598336, 1997920, 2497400, 3196672, 3995840, 4994800, 7991680, 9989600, 15983360, 19979200, 39958400, 79916800]

約数ペア:

[(1, 79916800), (2, 39958400), (4, 19979200), (5, 15983360), (8, 9989600), (10, 7991680), (16, 4994800), (20, 3995840), (25, 3196672), (32, 2497400), (40, 1997920), (50, 1598336), (64, 1248700), (80, 998960), (100, 799168), (128, 624350), (160, 499480), (200, 399584), (256, 312175), (320, 249740), (400, 199792), (640, 124870), (800, 99896), (1280, 62435), (1600, 49948), (3200, 24974), (6400, 12487)]