20868155

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{809}}^1$

素因数の和:899

約数の個数: 32

約数和(自身を含む): 31726080

約数和(自身を除く): 10857925

約数列:

[1, 5, 7, 11, 35, 55, 67, 77, 335, 385, 469, 737, 809, 2345, 3685, 4045, 5159, 5663, 8899, 25795, 28315, 44495, 54203, 62293, 271015, 311465, 379421, 596233, 1897105, 2981165, 4173631, 20868155]

約数ペア:

[(1, 20868155), (5, 4173631), (7, 2981165), (11, 1897105), (35, 596233), (55, 379421), (67, 311465), (77, 271015), (335, 62293), (385, 54203), (469, 44495), (737, 28315), (809, 25795), (2345, 8899), (3685, 5663), (4045, 5159)]