12890960

素因数分解:

$2^4\times 5^1\times {\mathrm{161137}}^1$

素因数の和:161150

約数の個数: 20

約数和(自身を含む): 29971668

約数和(自身を除く): 17080708

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 161137, 322274, 644548, 805685, 1289096, 1611370, 2578192, 3222740, 6445480, 12890960]

約数ペア:

[(1, 12890960), (2, 6445480), (4, 3222740), (5, 2578192), (8, 1611370), (10, 1289096), (16, 805685), (20, 644548), (40, 322274), (80, 161137)]