20517999

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{1559}}^1$

素因数の和:1710

約数の個数: 16

約数和(自身を含む): 28304640

約数和(自身を除く): 7786641

約数列:

[1, 3, 41, 107, 123, 321, 1559, 4387, 4677, 13161, 63919, 166813, 191757, 500439, 6839333, 20517999]

約数ペア:

[(1, 20517999), (3, 6839333), (41, 500439), (107, 191757), (123, 166813), (321, 63919), (1559, 13161), (4387, 4677)]