28120605

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{81509}}^1$

素因数の和:81540

約数の個数: 16

約数和(自身を含む): 46949760

約数和(自身を除く): 18829155

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 81509, 244527, 407545, 1222635, 1874707, 5624121, 9373535, 28120605]

約数ペア:

[(1, 28120605), (3, 9373535), (5, 5624121), (15, 1874707), (23, 1222635), (69, 407545), (115, 244527), (345, 81509)]