19918143

素因数分解:

$3^4\times 7^1\times {\mathrm{35129}}^1$

素因数の和:35148

約数の個数: 20

約数和(自身を含む): 34005840

約数和(自身を除く): 14087697

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 35129, 105387, 245903, 316161, 737709, 948483, 2213127, 2845449, 6639381, 19918143]

約数ペア:

[(1, 19918143), (3, 6639381), (7, 2845449), (9, 2213127), (21, 948483), (27, 737709), (63, 316161), (81, 245903), (189, 105387), (567, 35129)]