19981326

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{77447}}^1$

素因数の和:77495

約数の個数: 16

約数和(自身を含む): 40892544

約数和(自身を除く): 20911218

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 77447, 154894, 232341, 464682, 3330221, 6660442, 9990663, 19981326]

約数ペア:

[(1, 19981326), (2, 9990663), (3, 6660442), (6, 3330221), (43, 464682), (86, 232341), (129, 154894), (258, 77447)]