18082280

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6367}}^1$

素因数の和:6449

約数の個数: 32

約数和(自身を含む): 41264640

約数和(自身を除く): 23182360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 6367, 12734, 25468, 31835, 50936, 63670, 127340, 254680, 452057, 904114, 1808228, 2260285, 3616456, 4520570, 9041140, 18082280]

約数ペア:

[(1, 18082280), (2, 9041140), (4, 4520570), (5, 3616456), (8, 2260285), (10, 1808228), (20, 904114), (40, 452057), (71, 254680), (142, 127340), (284, 63670), (355, 50936), (568, 31835), (710, 25468), (1420, 12734), (2840, 6367)]