205400540

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{99709}}^1$

素因数の和:99821

約数の個数: 24

約数和(自身を含む): 435533280

約数和(自身を除く): 230132740

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 99709, 199418, 398836, 498545, 997090, 1994180, 10270027, 20540054, 41080108, 51350135, 102700270, 205400540]

約数ペア:

[(1, 205400540), (2, 102700270), (4, 51350135), (5, 41080108), (10, 20540054), (20, 10270027), (103, 1994180), (206, 997090), (412, 498545), (515, 398836), (1030, 199418), (2060, 99709)]