20161220

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{9787}}^1$

素因数の和:9899

約数の個数: 24

約数和(自身を含む): 42753984

約数和(自身を除く): 22592764

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 9787, 19574, 39148, 48935, 97870, 195740, 1008061, 2016122, 4032244, 5040305, 10080610, 20161220]

約数ペア:

[(1, 20161220), (2, 10080610), (4, 5040305), (5, 4032244), (10, 2016122), (20, 1008061), (103, 195740), (206, 97870), (412, 48935), (515, 39148), (1030, 19574), (2060, 9787)]