28720016

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{138077}}^1$

素因数の和:138098

約数の個数: 20

約数和(自身を含む): 59925852

約数和(自身を除く): 31205836

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 138077, 276154, 552308, 1104616, 1795001, 2209232, 3590002, 7180004, 14360008, 28720016]

約数ペア:

[(1, 28720016), (2, 14360008), (4, 7180004), (8, 3590002), (13, 2209232), (16, 1795001), (26, 1104616), (52, 552308), (104, 276154), (208, 138077)]