18005080

素因数分解:

$2^3\times 5^1\times {\mathrm{450127}}^1$

素因数の和:450138

約数の個数: 16

約数和(自身を含む): 40511520

約数和(自身を除く): 22506440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 450127, 900254, 1800508, 2250635, 3601016, 4501270, 9002540, 18005080]

約数ペア:

[(1, 18005080), (2, 9002540), (4, 4501270), (5, 3601016), (8, 2250635), (10, 1800508), (20, 900254), (40, 450127)]