20785840

素因数分解:

$2^4\times 5^1\times {\mathrm{259823}}^1$

素因数の和:259836

約数の個数: 20

約数和(自身を含む): 48327264

約数和(自身を除く): 27541424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 259823, 519646, 1039292, 1299115, 2078584, 2598230, 4157168, 5196460, 10392920, 20785840]

約数ペア:

[(1, 20785840), (2, 10392920), (4, 5196460), (5, 4157168), (8, 2598230), (10, 2078584), (16, 1299115), (20, 1039292), (40, 519646), (80, 259823)]