20090900

素因数分解:

$2^2\times 5^2\times {\mathrm{200909}}^1$

素因数の和:200923

約数の個数: 18

約数和(自身を含む): 43597470

約数和(自身を除く): 23506570

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 200909, 401818, 803636, 1004545, 2009090, 4018180, 5022725, 10045450, 20090900]

約数ペア:

[(1, 20090900), (2, 10045450), (4, 5022725), (5, 4018180), (10, 2009090), (20, 1004545), (25, 803636), (50, 401818), (100, 200909)]