19539340

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8963}}^1$

素因数の和:9081

約数の個数: 24

約数和(自身を含む): 41413680

約数和(自身を除く): 21874340

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8963, 17926, 35852, 44815, 89630, 179260, 976967, 1953934, 3907868, 4884835, 9769670, 19539340]

約数ペア:

[(1, 19539340), (2, 9769670), (4, 4884835), (5, 3907868), (10, 1953934), (20, 976967), (109, 179260), (218, 89630), (436, 44815), (545, 35852), (1090, 17926), (2180, 8963)]