80407520

素因数分解:

$2^5\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2551}}^1$

素因数の和:2763

約数の個数: 48

約数和(自身を含む): 191001888

約数和(自身を除く): 110594368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 197, 394, 788, 985, 1576, 1970, 2551, 3152, 3940, 5102, 6304, 7880, 10204, 12755, 15760, 20408, 25510, 31520, 40816, 51020, 81632, 102040, 204080, 408160, 502547, 1005094, 2010188, 2512735, 4020376, 5025470, 8040752, 10050940, 16081504, 20101880, 40203760, 80407520]

約数ペア:

[(1, 80407520), (2, 40203760), (4, 20101880), (5, 16081504), (8, 10050940), (10, 8040752), (16, 5025470), (20, 4020376), (32, 2512735), (40, 2010188), (80, 1005094), (160, 502547), (197, 408160), (394, 204080), (788, 102040), (985, 81632), (1576, 51020), (1970, 40816), (2551, 31520), (3152, 25510), (3940, 20408), (5102, 15760), (6304, 12755), (7880, 10204)]