78604040

素因数分解:

$2^3\times 5^1\times {\mathrm{857}}^1\times {\mathrm{2293}}^1$

素因数の和:3161

約数の個数: 32

約数和(自身を含む): 177142680

約数和(自身を除く): 98538640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 857, 1714, 2293, 3428, 4285, 4586, 6856, 8570, 9172, 11465, 17140, 18344, 22930, 34280, 45860, 91720, 1965101, 3930202, 7860404, 9825505, 15720808, 19651010, 39302020, 78604040]

約数ペア:

[(1, 78604040), (2, 39302020), (4, 19651010), (5, 15720808), (8, 9825505), (10, 7860404), (20, 3930202), (40, 1965101), (857, 91720), (1714, 45860), (2293, 34280), (3428, 22930), (4285, 18344), (4586, 17140), (6856, 11465), (8570, 9172)]