20812180

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{10103}}^1$

素因数の和:10215

約数の個数: 24

約数和(自身を含む): 44134272

約数和(自身を除く): 23322092

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 10103, 20206, 40412, 50515, 101030, 202060, 1040609, 2081218, 4162436, 5203045, 10406090, 20812180]

約数ペア:

[(1, 20812180), (2, 10406090), (4, 5203045), (5, 4162436), (10, 2081218), (20, 1040609), (103, 202060), (206, 101030), (412, 50515), (515, 40412), (1030, 20206), (2060, 10103)]