21046810

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19309}}^1$

素因数の和:19425

約数の個数: 16

約数和(自身を含む): 38233800

約数和(自身を除く): 17186990

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19309, 38618, 96545, 193090, 2104681, 4209362, 10523405, 21046810]

約数ペア:

[(1, 21046810), (2, 10523405), (5, 4209362), (10, 2104681), (109, 193090), (218, 96545), (545, 38618), (1090, 19309)]