4078780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1871}}^1$

素因数の和:1989

約数の個数: 24

約数和(自身を含む): 8648640

約数和(自身を除く): 4569860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 1871, 2180, 3742, 7484, 9355, 18710, 37420, 203939, 407878, 815756, 1019695, 2039390, 4078780]

約数ペア:

[(1, 4078780), (2, 2039390), (4, 1019695), (5, 815756), (10, 407878), (20, 203939), (109, 37420), (218, 18710), (436, 9355), (545, 7484), (1090, 3742), (1871, 2180)]