16988060

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1321}}^1$

素因数の和:1973

約数の個数: 24

約数和(自身を含む): 35757456

約数和(自身を除く): 18769396

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 1321, 2572, 2642, 3215, 5284, 6430, 6605, 12860, 13210, 26420, 849403, 1698806, 3397612, 4247015, 8494030, 16988060]

約数ペア:

[(1, 16988060), (2, 8494030), (4, 4247015), (5, 3397612), (10, 1698806), (20, 849403), (643, 26420), (1286, 13210), (1321, 12860), (2572, 6605), (2642, 6430), (3215, 5284)]