18210820

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{2609}}^1$

素因数の和:2967

約数の個数: 24

約数和(自身を含む): 38367000

約数和(自身を除く): 20156180

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 2609, 3490, 5218, 6980, 10436, 13045, 26090, 52180, 910541, 1821082, 3642164, 4552705, 9105410, 18210820]

約数ペア:

[(1, 18210820), (2, 9105410), (4, 4552705), (5, 3642164), (10, 1821082), (20, 910541), (349, 52180), (698, 26090), (1396, 13045), (1745, 10436), (2609, 6980), (3490, 5218)]