18908740

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 40989312

約数和(自身を除く): 22080572

約数列:

[1, 2, 4, 5, 10, 20, 67, 103, 134, 137, 206, 268, 274, 335, 412, 515, 548, 670, 685, 1030, 1340, 1370, 2060, 2740, 6901, 9179, 13802, 14111, 18358, 27604, 28222, 34505, 36716, 45895, 56444, 69010, 70555, 91790, 138020, 141110, 183580, 282220, 945437, 1890874, 3781748, 4727185, 9454370, 18908740]

約数ペア:

[(1, 18908740), (2, 9454370), (4, 4727185), (5, 3781748), (10, 1890874), (20, 945437), (67, 282220), (103, 183580), (134, 141110), (137, 138020), (206, 91790), (268, 70555), (274, 69010), (335, 56444), (412, 45895), (515, 36716), (548, 34505), (670, 28222), (685, 27604), (1030, 18358), (1340, 14111), (1370, 13802), (2060, 9179), (2740, 6901)]