21058828

素因数分解:

$2^2\times 7^3\times {\mathrm{15349}}^1$

素因数の和:15374

約数の個数: 24

約数和(自身を含む): 42980000

約数和(自身を除く): 21921172

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372, 15349, 30698, 61396, 107443, 214886, 429772, 752101, 1504202, 3008404, 5264707, 10529414, 21058828]

約数ペア:

[(1, 21058828), (2, 10529414), (4, 5264707), (7, 3008404), (14, 1504202), (28, 752101), (49, 429772), (98, 214886), (196, 107443), (343, 61396), (686, 30698), (1372, 15349)]