21001100

素因数分解:

$2^2\times 5^2\times {\mathrm{210011}}^1$

素因数の和:210025

約数の個数: 18

約数和(自身を含む): 45572604

約数和(自身を除く): 24571504

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 210011, 420022, 840044, 1050055, 2100110, 4200220, 5250275, 10500550, 21001100]

約数ペア:

[(1, 21001100), (2, 10500550), (4, 5250275), (5, 4200220), (10, 2100110), (20, 1050055), (25, 840044), (50, 420022), (100, 210011)]