19138220

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8779}}^1$

素因数の和:8897

約数の個数: 24

約数和(自身を含む): 40563600

約数和(自身を除く): 21425380

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8779, 17558, 35116, 43895, 87790, 175580, 956911, 1913822, 3827644, 4784555, 9569110, 19138220]

約数ペア:

[(1, 19138220), (2, 9569110), (4, 4784555), (5, 3827644), (10, 1913822), (20, 956911), (109, 175580), (218, 87790), (436, 43895), (545, 35116), (1090, 17558), (2180, 8779)]