28640180

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13903}}^1$

素因数の和:14015

約数の個数: 24

約数和(自身を含む): 60732672

約数和(自身を除く): 32092492

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 13903, 27806, 55612, 69515, 139030, 278060, 1432009, 2864018, 5728036, 7160045, 14320090, 28640180]

約数ペア:

[(1, 28640180), (2, 14320090), (4, 7160045), (5, 5728036), (10, 2864018), (20, 1432009), (103, 278060), (206, 139030), (412, 69515), (515, 55612), (1030, 27806), (2060, 13903)]