20027320

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4861}}^1$

素因数の和:4975

約数の個数: 32

約数和(自身を含む): 45508320

約数和(自身を除く): 25481000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4861, 9722, 19444, 24305, 38888, 48610, 97220, 194440, 500683, 1001366, 2002732, 2503415, 4005464, 5006830, 10013660, 20027320]

約数ペア:

[(1, 20027320), (2, 10013660), (4, 5006830), (5, 4005464), (8, 2503415), (10, 2002732), (20, 1001366), (40, 500683), (103, 194440), (206, 97220), (412, 48610), (515, 38888), (824, 24305), (1030, 19444), (2060, 9722), (4120, 4861)]