21050840

素因数分解:

$2^3\times 5^1\times {\mathrm{526271}}^1$

素因数の和:526282

約数の個数: 16

約数和(自身を含む): 47364480

約数和(自身を除く): 26313640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526271, 1052542, 2105084, 2631355, 4210168, 5262710, 10525420, 21050840]

約数ペア:

[(1, 21050840), (2, 10525420), (4, 5262710), (5, 4210168), (8, 2631355), (10, 2105084), (20, 1052542), (40, 526271)]