20991005

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{35279}}^1$

素因数の和:35308

約数の個数: 16

約数和(自身を含む): 30481920

約数和(自身を除く): 9490915

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 35279, 176395, 246953, 599743, 1234765, 2998715, 4198201, 20991005]

約数ペア:

[(1, 20991005), (5, 4198201), (7, 2998715), (17, 1234765), (35, 599743), (85, 246953), (119, 176395), (595, 35279)]