18028180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20963}}^1$

素因数の和:21015

約数の個数: 24

約数和(自身を含む): 38741472

約数和(自身を除く): 20713292

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 20963, 41926, 83852, 104815, 209630, 419260, 901409, 1802818, 3605636, 4507045, 9014090, 18028180]

約数ペア:

[(1, 18028180), (2, 9014090), (4, 4507045), (5, 3605636), (10, 1802818), (20, 901409), (43, 419260), (86, 209630), (172, 104815), (215, 83852), (430, 41926), (860, 20963)]