21407967

素因数分解:

$3^2\times 7^1\times {\mathrm{419}}^1\times {\mathrm{811}}^1$

素因数の和:1243

約数の個数: 24

約数和(自身を含む): 35468160

約数和(自身を除く): 14060193

約数列:

[1, 3, 7, 9, 21, 63, 419, 811, 1257, 2433, 2933, 3771, 5677, 7299, 8799, 17031, 26397, 51093, 339809, 1019427, 2378663, 3058281, 7135989, 21407967]

約数ペア:

[(1, 21407967), (3, 7135989), (7, 3058281), (9, 2378663), (21, 1019427), (63, 339809), (419, 51093), (811, 26397), (1257, 17031), (2433, 8799), (2933, 7299), (3771, 5677)]