20821570

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3863}}^1$

素因数の和:3895

約数の個数: 48

約数和(自身を含む): 47573568

約数和(自身を除く): 26751998

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 3863, 5390, 7726, 19315, 27041, 38630, 42493, 54082, 84986, 135205, 189287, 212465, 270410, 297451, 378574, 424930, 594902, 946435, 1487255, 1892870, 2082157, 2974510, 4164314, 10410785, 20821570]

約数ペア:

[(1, 20821570), (2, 10410785), (5, 4164314), (7, 2974510), (10, 2082157), (11, 1892870), (14, 1487255), (22, 946435), (35, 594902), (49, 424930), (55, 378574), (70, 297451), (77, 270410), (98, 212465), (110, 189287), (154, 135205), (245, 84986), (385, 54082), (490, 42493), (539, 38630), (770, 27041), (1078, 19315), (2695, 7726), (3863, 5390)]