81875600

素因数分解:

$2^4\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2591}}^1$

素因数の和:2688

約数の個数: 60

約数和(自身を含む): 199272960

約数和(自身を除く): 117397360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 158, 200, 316, 395, 400, 632, 790, 1264, 1580, 1975, 2591, 3160, 3950, 5182, 6320, 7900, 10364, 12955, 15800, 20728, 25910, 31600, 41456, 51820, 64775, 103640, 129550, 204689, 207280, 259100, 409378, 518200, 818756, 1023445, 1036400, 1637512, 2046890, 3275024, 4093780, 5117225, 8187560, 10234450, 16375120, 20468900, 40937800, 81875600]

約数ペア:

[(1, 81875600), (2, 40937800), (4, 20468900), (5, 16375120), (8, 10234450), (10, 8187560), (16, 5117225), (20, 4093780), (25, 3275024), (40, 2046890), (50, 1637512), (79, 1036400), (80, 1023445), (100, 818756), (158, 518200), (200, 409378), (316, 259100), (395, 207280), (400, 204689), (632, 129550), (790, 103640), (1264, 64775), (1580, 51820), (1975, 41456), (2591, 31600), (3160, 25910), (3950, 20728), (5182, 15800), (6320, 12955), (7900, 10364)]