78721280

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5591}}^1$

素因数の和:5623

約数の個数: 72

約数和(自身を含む): 205740864

約数和(自身を除く): 127019584

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1760, 2816, 3520, 5591, 7040, 11182, 14080, 22364, 27955, 44728, 55910, 61501, 89456, 111820, 123002, 178912, 223640, 246004, 307505, 357824, 447280, 492008, 615010, 715648, 894560, 984016, 1230020, 1431296, 1789120, 1968032, 2460040, 3578240, 3936064, 4920080, 7156480, 7872128, 9840160, 15744256, 19680320, 39360640, 78721280]

約数ペア:

[(1, 78721280), (2, 39360640), (4, 19680320), (5, 15744256), (8, 9840160), (10, 7872128), (11, 7156480), (16, 4920080), (20, 3936064), (22, 3578240), (32, 2460040), (40, 1968032), (44, 1789120), (55, 1431296), (64, 1230020), (80, 984016), (88, 894560), (110, 715648), (128, 615010), (160, 492008), (176, 447280), (220, 357824), (256, 307505), (320, 246004), (352, 223640), (440, 178912), (640, 123002), (704, 111820), (880, 89456), (1280, 61501), (1408, 55910), (1760, 44728), (2816, 27955), (3520, 22364), (5591, 14080), (7040, 11182)]