1977260

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{907}}^1$

素因数の和:1025

約数の個数: 24

約数和(自身を含む): 4194960

約数和(自身を除く): 2217700

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 907, 1090, 1814, 2180, 3628, 4535, 9070, 18140, 98863, 197726, 395452, 494315, 988630, 1977260]

約数ペア:

[(1, 1977260), (2, 988630), (4, 494315), (5, 395452), (10, 197726), (20, 98863), (109, 18140), (218, 9070), (436, 4535), (545, 3628), (907, 2180), (1090, 1814)]