19278217

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{20707}}^1$

素因数の和:20740

約数の個数: 12

約数和(自身を含む): 23607120

約数和(自身を除く): 4328903

約数列:

[1, 7, 19, 49, 133, 931, 20707, 144949, 393433, 1014643, 2754031, 19278217]

約数ペア:

[(1, 19278217), (7, 2754031), (19, 1014643), (49, 393433), (133, 144949), (931, 20707)]