163680021

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{25579}}^1$

素因数の和:25670

約数の個数: 20

約数和(自身を含む): 247614400

約数和(自身を除く): 83934379

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 6399, 25579, 76737, 230211, 690633, 2020741, 2071899, 6062223, 18186669, 54560007, 163680021]

約数ペア:

[(1, 163680021), (3, 54560007), (9, 18186669), (27, 6062223), (79, 2071899), (81, 2020741), (237, 690633), (711, 230211), (2133, 76737), (6399, 25579)]