991707759

素因数分解:

$3^3\times 7^1\times {\mathrm{5247131}}^1$

素因数の和:5247147

約数の個数: 16

約数和(自身を含む): 1679082240

約数和(自身を除く): 687374481

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 5247131, 15741393, 36729917, 47224179, 110189751, 141672537, 330569253, 991707759]

約数ペア:

[(1, 991707759), (3, 330569253), (7, 141672537), (9, 110189751), (21, 47224179), (27, 36729917), (63, 15741393), (189, 5247131)]