16991373

素因数分解:

$3^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{1553}}^1$

素因数の和:2084

約数の個数: 16

約数和(自身を含む): 25958016

約数和(自身を除く): 8966643

約数列:

[1, 3, 7, 21, 521, 1553, 1563, 3647, 4659, 10871, 10941, 32613, 809113, 2427339, 5663791, 16991373]

約数ペア:

[(1, 16991373), (3, 5663791), (7, 2427339), (21, 809113), (521, 32613), (1553, 10941), (1563, 10871), (3647, 4659)]