21620960

素因数分解:

$2^5\times 5^1\times {\mathrm{135131}}^1$

素因数の和:135146

約数の個数: 24

約数和(自身を含む): 51079896

約数和(自身を除く): 29458936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135131, 270262, 540524, 675655, 1081048, 1351310, 2162096, 2702620, 4324192, 5405240, 10810480, 21620960]

約数ペア:

[(1, 21620960), (2, 10810480), (4, 5405240), (5, 4324192), (8, 2702620), (10, 2162096), (16, 1351310), (20, 1081048), (32, 675655), (40, 540524), (80, 270262), (160, 135131)]