21000545420

素因数分解:

$2^2\times 5^1\times {\mathrm{1050027271}}^1$

素因数の和:1050027280

約数の個数: 12

約数和(自身を含む): 44101145424

約数和(自身を除く): 23100600004

約数列:

[1, 2, 4, 5, 10, 20, 1050027271, 2100054542, 4200109084, 5250136355, 10500272710, 21000545420]

約数ペア:

[(1, 21000545420), (2, 10500272710), (4, 5250136355), (5, 4200109084), (10, 2100054542), (20, 1050027271)]