13280180

素因数分解:

$2^2\times 5^1\times {\mathrm{664009}}^1$

素因数の和:664018

約数の個数: 12

約数和(自身を含む): 27888420

約数和(自身を除く): 14608240

約数列:

[1, 2, 4, 5, 10, 20, 664009, 1328018, 2656036, 3320045, 6640090, 13280180]

約数ペア:

[(1, 13280180), (2, 6640090), (4, 3320045), (5, 2656036), (10, 1328018), (20, 664009)]