21262960

素因数分解:

$2^4\times 5^1\times {\mathrm{265787}}^1$

素因数の和:265800

約数の個数: 20

約数和(自身を含む): 49436568

約数和(自身を除く): 28173608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 265787, 531574, 1063148, 1328935, 2126296, 2657870, 4252592, 5315740, 10631480, 21262960]

約数ペア:

[(1, 21262960), (2, 10631480), (4, 5315740), (5, 4252592), (8, 2657870), (10, 2126296), (16, 1328935), (20, 1063148), (40, 531574), (80, 265787)]