20398605

素因数分解:

$3^1\times 5^1\times {\mathrm{761}}^1\times {\mathrm{1787}}^1$

素因数の和:2556

約数の個数: 16

約数和(自身を含む): 32698944

約数和(自身を除く): 12300339

約数列:

[1, 3, 5, 15, 761, 1787, 2283, 3805, 5361, 8935, 11415, 26805, 1359907, 4079721, 6799535, 20398605]

約数ペア:

[(1, 20398605), (3, 6799535), (5, 4079721), (15, 1359907), (761, 26805), (1787, 11415), (2283, 8935), (3805, 5361)]