20840048

素因数分解:

$2^4\times {\mathrm{211}}^1\times {\mathrm{6173}}^1$

素因数の和:6392

約数の個数: 20

約数和(自身を含む): 40575528

約数和(自身を除く): 19735480

約数列:

[1, 2, 4, 8, 16, 211, 422, 844, 1688, 3376, 6173, 12346, 24692, 49384, 98768, 1302503, 2605006, 5210012, 10420024, 20840048]

約数ペア:

[(1, 20840048), (2, 10420024), (4, 5210012), (8, 2605006), (16, 1302503), (211, 98768), (422, 49384), (844, 24692), (1688, 12346), (3376, 6173)]