20090879998

素因数分解:

$2^1\times 7^1\times {\mathrm{997}}^1\times {\mathrm{1439381}}^1$

素因数の和:1440387

約数の個数: 16

約数和(自身を含む): 34476077664

約数和(自身を除く): 14385197666

約数列:

[1, 2, 7, 14, 997, 1994, 6979, 13958, 1439381, 2878762, 10075667, 20151334, 1435062857, 2870125714, 10045439999, 20090879998]

約数ペア:

[(1, 20090879998), (2, 10045439999), (7, 2870125714), (14, 1435062857), (997, 20151334), (1994, 10075667), (6979, 2878762), (13958, 1439381)]