21434119

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 25953696

約数和(自身を除く): 4519577

約数列:

[1, 7, 49, 61, 71, 101, 427, 497, 707, 2989, 3479, 4331, 4949, 6161, 7171, 30317, 43127, 50197, 212219, 301889, 351379, 437431, 3062017, 21434119]

約数ペア:

[(1, 21434119), (7, 3062017), (49, 437431), (61, 351379), (71, 301889), (101, 212219), (427, 50197), (497, 43127), (707, 30317), (2989, 7171), (3479, 6161), (4331, 4949)]