21816711

素因数分解:

$3^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{811}}^1$

素因数の和:892

約数の個数: 36

約数和(自身を含む): 37304904

約数和(自身を除く): 15488193

約数列:

[1, 3, 7, 9, 21, 49, 61, 63, 147, 183, 427, 441, 549, 811, 1281, 2433, 2989, 3843, 5677, 7299, 8967, 17031, 26901, 39739, 49471, 51093, 119217, 148413, 346297, 357651, 445239, 1038891, 2424079, 3116673, 7272237, 21816711]

約数ペア:

[(1, 21816711), (3, 7272237), (7, 3116673), (9, 2424079), (21, 1038891), (49, 445239), (61, 357651), (63, 346297), (147, 148413), (183, 119217), (427, 51093), (441, 49471), (549, 39739), (811, 26901), (1281, 17031), (2433, 8967), (2989, 7299), (3843, 5677)]