19980044

素因数分解:

$2^2\times 7^2\times {\mathrm{101939}}^1$

素因数の和:101957

約数の個数: 18

約数和(自身を含む): 40674060

約数和(自身を除く): 20694016

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 101939, 203878, 407756, 713573, 1427146, 2854292, 4995011, 9990022, 19980044]

約数ペア:

[(1, 19980044), (2, 9990022), (4, 4995011), (7, 2854292), (14, 1427146), (28, 713573), (49, 407756), (98, 203878), (196, 101939)]