28456940

素因数分解:

$2^2\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{1283}}^1$

素因数の和:2401

約数の個数: 24

約数和(自身を含む): 59860080

約数和(自身を除く): 31403140

約数列:

[1, 2, 4, 5, 10, 20, 1109, 1283, 2218, 2566, 4436, 5132, 5545, 6415, 11090, 12830, 22180, 25660, 1422847, 2845694, 5691388, 7114235, 14228470, 28456940]

約数ペア:

[(1, 28456940), (2, 14228470), (4, 7114235), (5, 5691388), (10, 2845694), (20, 1422847), (1109, 25660), (1283, 22180), (2218, 12830), (2566, 11090), (4436, 6415), (5132, 5545)]