21090920

素因数分解:

$2^3\times 5^1\times {\mathrm{527273}}^1$

素因数の和:527284

約数の個数: 16

約数和(自身を含む): 47454660

約数和(自身を除く): 26363740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 527273, 1054546, 2109092, 2636365, 4218184, 5272730, 10545460, 21090920]

約数ペア:

[(1, 21090920), (2, 10545460), (4, 5272730), (5, 4218184), (8, 2636365), (10, 2109092), (20, 1054546), (40, 527273)]