20684468

素因数分解:

$2^2\times 7^2\times {\mathrm{105533}}^1$

素因数の和:105551

約数の個数: 18

約数和(自身を含む): 42108066

約数和(自身を除く): 21423598

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 105533, 211066, 422132, 738731, 1477462, 2954924, 5171117, 10342234, 20684468]

約数ペア:

[(1, 20684468), (2, 10342234), (4, 5171117), (7, 2954924), (14, 1477462), (28, 738731), (49, 422132), (98, 211066), (196, 105533)]