21167984

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{13099}}^1$

素因数の和:13208

約数の個数: 20

約数和(自身を含む): 41422200

約数和(自身を除く): 20254216

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 808, 1616, 13099, 26198, 52396, 104792, 209584, 1322999, 2645998, 5291996, 10583992, 21167984]

約数ペア:

[(1, 21167984), (2, 10583992), (4, 5291996), (8, 2645998), (16, 1322999), (101, 209584), (202, 104792), (404, 52396), (808, 26198), (1616, 13099)]