18207405

素因数分解:

$3^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1009}}^1$

素因数の和:1421

約数の個数: 24

約数和(自身を含む): 31669560

約数和(自身を除く): 13462155

約数列:

[1, 3, 5, 9, 15, 45, 401, 1009, 1203, 2005, 3027, 3609, 5045, 6015, 9081, 15135, 18045, 45405, 404609, 1213827, 2023045, 3641481, 6069135, 18207405]

約数ペア:

[(1, 18207405), (3, 6069135), (5, 3641481), (9, 2023045), (15, 1213827), (45, 404609), (401, 45405), (1009, 18045), (1203, 15135), (2005, 9081), (3027, 6015), (3609, 5045)]