20451950

素因数分解:

$2^1\times 5^2\times {\mathrm{449}}^1\times {\mathrm{911}}^1$

素因数の和:1372

約数の個数: 24

約数和(自身を含む): 38167200

約数和(自身を除く): 17715250

約数列:

[1, 2, 5, 10, 25, 50, 449, 898, 911, 1822, 2245, 4490, 4555, 9110, 11225, 22450, 22775, 45550, 409039, 818078, 2045195, 4090390, 10225975, 20451950]

約数ペア:

[(1, 20451950), (2, 10225975), (5, 4090390), (10, 2045195), (25, 818078), (50, 409039), (449, 45550), (898, 22775), (911, 22450), (1822, 11225), (2245, 9110), (4490, 4555)]