20400285

素因数分解:

$3^1\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1621}}^1$

素因数の和:2468

約数の個数: 16

約数和(自身を含む): 32699520

約数和(自身を除く): 12299235

約数列:

[1, 3, 5, 15, 839, 1621, 2517, 4195, 4863, 8105, 12585, 24315, 1360019, 4080057, 6800095, 20400285]

約数ペア:

[(1, 20400285), (3, 6800095), (5, 4080057), (15, 1360019), (839, 24315), (1621, 12585), (2517, 8105), (4195, 4863)]