20105967

素因数分解:

$3^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{1489}}^1$

素因数の和:2142

約数の個数: 16

約数和(自身を含む): 30705920

約数和(自身を除く): 10599953

約数列:

[1, 3, 7, 21, 643, 1489, 1929, 4467, 4501, 10423, 13503, 31269, 957427, 2872281, 6701989, 20105967]

約数ペア:

[(1, 20105967), (3, 6701989), (7, 2872281), (21, 957427), (643, 31269), (1489, 13503), (1929, 10423), (4467, 4501)]