18986615

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{1543}}^1$

素因数の和:1678

約数の個数: 16

約数和(自身を含む): 24012288

約数和(自身を除く): 5025673

約数列:

[1, 5, 23, 107, 115, 535, 1543, 2461, 7715, 12305, 35489, 165101, 177445, 825505, 3797323, 18986615]

約数ペア:

[(1, 18986615), (5, 3797323), (23, 825505), (107, 177445), (115, 165101), (535, 35489), (1543, 12305), (2461, 7715)]