20316555

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{21499}}^1$

素因数の和:21520

約数の個数: 32

約数和(自身を含む): 41280000

約数和(自身を除く): 20963445

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 21499, 64497, 107495, 150493, 193491, 322485, 451479, 580473, 752465, 967455, 1354437, 2257395, 2902365, 4063311, 6772185, 20316555]

約数ペア:

[(1, 20316555), (3, 6772185), (5, 4063311), (7, 2902365), (9, 2257395), (15, 1354437), (21, 967455), (27, 752465), (35, 580473), (45, 451479), (63, 322485), (105, 193491), (135, 150493), (189, 107495), (315, 64497), (945, 21499)]