21430840

素因数分解:

$2^3\times 5^1\times {\mathrm{535771}}^1$

素因数の和:535782

約数の個数: 16

約数和(自身を含む): 48219480

約数和(自身を除く): 26788640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 535771, 1071542, 2143084, 2678855, 4286168, 5357710, 10715420, 21430840]

約数ペア:

[(1, 21430840), (2, 10715420), (4, 5357710), (5, 4286168), (8, 2678855), (10, 2143084), (20, 1071542), (40, 535771)]