21176840

素因数分解:

$2^3\times 5^1\times {\mathrm{529421}}^1$

素因数の和:529432

約数の個数: 16

約数和(自身を含む): 47647980

約数和(自身を除く): 26471140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 529421, 1058842, 2117684, 2647105, 4235368, 5294210, 10588420, 21176840]

約数ペア:

[(1, 21176840), (2, 10588420), (4, 5294210), (5, 4235368), (8, 2647105), (10, 2117684), (20, 1058842), (40, 529421)]