20900408

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{60757}}^1$

素因数の和:60806

約数の個数: 16

約数和(自身を含む): 40100280

約数和(自身を除く): 19199872

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 60757, 121514, 243028, 486056, 2612551, 5225102, 10450204, 20900408]

約数ペア:

[(1, 20900408), (2, 10450204), (4, 5225102), (8, 2612551), (43, 486056), (86, 243028), (172, 121514), (344, 60757)]