21338930

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19577}}^1$

素因数の和:19693

約数の個数: 16

約数和(自身を含む): 38764440

約数和(自身を除く): 17425510

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19577, 39154, 97885, 195770, 2133893, 4267786, 10669465, 21338930]

約数ペア:

[(1, 21338930), (2, 10669465), (5, 4267786), (10, 2133893), (109, 195770), (218, 97885), (545, 39154), (1090, 19577)]