27987615

素因数分解:

$3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2789}}^1$

素因数の和:3023

約数の個数: 24

約数和(自身を含む): 48746880

約数和(自身を除く): 20759265

約数列:

[1, 3, 5, 9, 15, 45, 223, 669, 1115, 2007, 2789, 3345, 8367, 10035, 13945, 25101, 41835, 125505, 621947, 1865841, 3109735, 5597523, 9329205, 27987615]

約数ペア:

[(1, 27987615), (3, 9329205), (5, 5597523), (9, 3109735), (15, 1865841), (45, 621947), (223, 125505), (669, 41835), (1115, 25101), (2007, 13945), (2789, 10035), (3345, 8367)]