21081100

素因数分解:

$2^2\times 5^2\times {\mathrm{210811}}^1$

素因数の和:210825

約数の個数: 18

約数和(自身を含む): 45746204

約数和(自身を除く): 24665104

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 210811, 421622, 843244, 1054055, 2108110, 4216220, 5270275, 10540550, 21081100]

約数ペア:

[(1, 21081100), (2, 10540550), (4, 5270275), (5, 4216220), (10, 2108110), (20, 1054055), (25, 843244), (50, 421622), (100, 210811)]