21086900

素因数分解:

$2^2\times 5^2\times {\mathrm{210869}}^1$

素因数の和:210883

約数の個数: 18

約数和(自身を含む): 45758790

約数和(自身を除く): 24671890

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 210869, 421738, 843476, 1054345, 2108690, 4217380, 5271725, 10543450, 21086900]

約数ペア:

[(1, 21086900), (2, 10543450), (4, 5271725), (5, 4217380), (10, 2108690), (20, 1054345), (25, 843476), (50, 421738), (100, 210869)]