80784260

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{37057}}^1$

素因数の和:37175

約数の個数: 24

約数和(自身を含む): 171207960

約数和(自身を除く): 90423700

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 37057, 74114, 148228, 185285, 370570, 741140, 4039213, 8078426, 16156852, 20196065, 40392130, 80784260]

約数ペア:

[(1, 80784260), (2, 40392130), (4, 20196065), (5, 16156852), (10, 8078426), (20, 4039213), (109, 741140), (218, 370570), (436, 185285), (545, 148228), (1090, 74114), (2180, 37057)]