21000948970

素因数分解:

$2^1\times 5^1\times {\mathrm{4999}}^1\times {\mathrm{420103}}^1$

素因数の和:425109

約数の個数: 16

約数和(自身を含む): 37809360000

約数和(自身を除く): 16808411030

約数列:

[1, 2, 5, 10, 4999, 9998, 24995, 49990, 420103, 840206, 2100515, 4201030, 2100094897, 4200189794, 10500474485, 21000948970]

約数ペア:

[(1, 21000948970), (2, 10500474485), (5, 4200189794), (10, 2100094897), (4999, 4201030), (9998, 2100515), (24995, 840206), (49990, 420103)]