21100111

素因数分解:

${\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:378

約数の個数: 16

約数和(自身を含む): 23047200

約数和(自身を除く): 1947089

約数列:

[1, 17, 59, 109, 193, 1003, 1853, 3281, 6431, 11387, 21037, 109327, 193579, 357629, 1241183, 21100111]

約数ペア:

[(1, 21100111), (17, 1241183), (59, 357629), (109, 193579), (193, 109327), (1003, 21037), (1853, 11387), (3281, 6431)]