21080450

素因数分解:

$2^1\times 5^2\times {\mathrm{421609}}^1$

素因数の和:421621

約数の個数: 12

約数和(自身を含む): 39209730

約数和(自身を除く): 18129280

約数列:

[1, 2, 5, 10, 25, 50, 421609, 843218, 2108045, 4216090, 10540225, 21080450]

約数ペア:

[(1, 21080450), (2, 10540225), (5, 4216090), (10, 2108045), (25, 843218), (50, 421609)]