20380900

素因数分解:

$2^2\times 5^2\times {\mathrm{203809}}^1$

素因数の和:203823

約数の個数: 18

約数和(自身を含む): 44226770

約数和(自身を除く): 23845870

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 203809, 407618, 815236, 1019045, 2038090, 4076180, 5095225, 10190450, 20380900]

約数ペア:

[(1, 20380900), (2, 10190450), (4, 5095225), (5, 4076180), (10, 2038090), (20, 1019045), (25, 815236), (50, 407618), (100, 203809)]