21000497020

素因数分解:

$2^2\times 5^1\times {\mathrm{1050024851}}^1$

素因数の和:1050024860

約数の個数: 12

約数和(自身を含む): 44101043784

約数和(自身を除く): 23100546764

約数列:

[1, 2, 4, 5, 10, 20, 1050024851, 2100049702, 4200099404, 5250124255, 10500248510, 21000497020]

約数ペア:

[(1, 21000497020), (2, 10500248510), (4, 5250124255), (5, 4200099404), (10, 2100049702), (20, 1050024851)]