78800000

素因数分解:

$2^7\times 5^5\times {\mathrm{197}}^1$

素因数の和:236

約数の個数: 96

約数和(自身を含む): 197213940

約数和(自身を除く): 118413940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 197, 200, 250, 320, 394, 400, 500, 625, 640, 788, 800, 985, 1000, 1250, 1576, 1600, 1970, 2000, 2500, 3125, 3152, 3200, 3940, 4000, 4925, 5000, 6250, 6304, 7880, 8000, 9850, 10000, 12500, 12608, 15760, 16000, 19700, 20000, 24625, 25000, 25216, 31520, 39400, 40000, 49250, 50000, 63040, 78800, 80000, 98500, 100000, 123125, 126080, 157600, 197000, 200000, 246250, 315200, 394000, 400000, 492500, 615625, 630400, 788000, 985000, 1231250, 1576000, 1970000, 2462500, 3152000, 3940000, 4925000, 7880000, 9850000, 15760000, 19700000, 39400000, 78800000]

約数ペア:

[(1, 78800000), (2, 39400000), (4, 19700000), (5, 15760000), (8, 9850000), (10, 7880000), (16, 4925000), (20, 3940000), (25, 3152000), (32, 2462500), (40, 1970000), (50, 1576000), (64, 1231250), (80, 985000), (100, 788000), (125, 630400), (128, 615625), (160, 492500), (197, 400000), (200, 394000), (250, 315200), (320, 246250), (394, 200000), (400, 197000), (500, 157600), (625, 126080), (640, 123125), (788, 100000), (800, 98500), (985, 80000), (1000, 78800), (1250, 63040), (1576, 50000), (1600, 49250), (1970, 40000), (2000, 39400), (2500, 31520), (3125, 25216), (3152, 25000), (3200, 24625), (3940, 20000), (4000, 19700), (4925, 16000), (5000, 15760), (6250, 12608), (6304, 12500), (7880, 10000), (8000, 9850)]