21890840

素因数分解:

$2^3\times 5^1\times {\mathrm{547271}}^1$

素因数の和:547282

約数の個数: 16

約数和(自身を含む): 49254480

約数和(自身を除く): 27363640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547271, 1094542, 2189084, 2736355, 4378168, 5472710, 10945420, 21890840]

約数ペア:

[(1, 21890840), (2, 10945420), (4, 5472710), (5, 4378168), (8, 2736355), (10, 2189084), (20, 1094542), (40, 547271)]