21085700

素因数分解:

$2^2\times 5^2\times {\mathrm{210857}}^1$

素因数の和:210871

約数の個数: 18

約数和(自身を含む): 45756186

約数和(自身を除く): 24670486

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 210857, 421714, 843428, 1054285, 2108570, 4217140, 5271425, 10542850, 21085700]

約数ペア:

[(1, 21085700), (2, 10542850), (4, 5271425), (5, 4217140), (10, 2108570), (20, 1054285), (25, 843428), (50, 421714), (100, 210857)]