80178740

素因数分解:

$2^2\times 5^1\times {\mathrm{997}}^1\times {\mathrm{4021}}^1$

素因数の和:5027

約数の個数: 24

約数和(自身を含む): 168586152

約数和(自身を除く): 88407412

約数列:

[1, 2, 4, 5, 10, 20, 997, 1994, 3988, 4021, 4985, 8042, 9970, 16084, 19940, 20105, 40210, 80420, 4008937, 8017874, 16035748, 20044685, 40089370, 80178740]

約数ペア:

[(1, 80178740), (2, 40089370), (4, 20044685), (5, 16035748), (10, 8017874), (20, 4008937), (997, 80420), (1994, 40210), (3988, 20105), (4021, 19940), (4985, 16084), (8042, 9970)]