20900709

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1019}}^1$

素因数の和:1121

約数の個数: 24

約数和(自身を含む): 31505760

約数和(自身を除く): 10605051

約数列:

[1, 3, 9, 43, 53, 129, 159, 387, 477, 1019, 2279, 3057, 6837, 9171, 20511, 43817, 54007, 131451, 162021, 394353, 486063, 2322301, 6966903, 20900709]

約数ペア:

[(1, 20900709), (3, 6966903), (9, 2322301), (43, 486063), (53, 394353), (129, 162021), (159, 131451), (387, 54007), (477, 43817), (1019, 20511), (2279, 9171), (3057, 6837)]