20490890110

素因数分解:

$2^1\times 5^1\times {\mathrm{2141}}^1\times {\mathrm{957071}}^1$

素因数の和:959219

約数の個数: 16

約数和(自身を含む): 36900868032

約数和(自身を除く): 16409977922

約数列:

[1, 2, 5, 10, 2141, 4282, 10705, 21410, 957071, 1914142, 4785355, 9570710, 2049089011, 4098178022, 10245445055, 20490890110]

約数ペア:

[(1, 20490890110), (2, 10245445055), (5, 4098178022), (10, 2049089011), (2141, 9570710), (4282, 4785355), (10705, 1914142), (21410, 957071)]