80256040

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{5749}}^1$

素因数の和:6109

約数の個数: 32

約数和(自身を含む): 181125000

約数和(自身を除く): 100868960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 5749, 6980, 11498, 13960, 22996, 28745, 45992, 57490, 114980, 229960, 2006401, 4012802, 8025604, 10032005, 16051208, 20064010, 40128020, 80256040]

約数ペア:

[(1, 80256040), (2, 40128020), (4, 20064010), (5, 16051208), (8, 10032005), (10, 8025604), (20, 4012802), (40, 2006401), (349, 229960), (698, 114980), (1396, 57490), (1745, 45992), (2792, 28745), (3490, 22996), (5749, 13960), (6980, 11498)]