19964427

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{22109}}^1$

素因数の和:22162

約数の個数: 16

約数和(自身を含む): 31130880

約数和(自身を除く): 11166453

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 22109, 66327, 154763, 464289, 950687, 2852061, 6654809, 19964427]

約数ペア:

[(1, 19964427), (3, 6654809), (7, 2852061), (21, 950687), (43, 464289), (129, 154763), (301, 66327), (903, 22109)]