28168215

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{81647}}^1$

素因数の和:81678

約数の個数: 16

約数和(自身を含む): 47029248

約数和(自身を除く): 18861033

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 81647, 244941, 408235, 1224705, 1877881, 5633643, 9389405, 28168215]

約数ペア:

[(1, 28168215), (3, 9389405), (5, 5633643), (15, 1877881), (23, 1224705), (69, 408235), (115, 244941), (345, 81647)]