30872860

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{7757}}^1$

素因数の和:7965

約数の個数: 24

約数和(自身を含む): 65167200

約数和(自身を除く): 34294340

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 7757, 15514, 31028, 38785, 77570, 155140, 1543643, 3087286, 6174572, 7718215, 15436430, 30872860]

約数ペア:

[(1, 30872860), (2, 15436430), (4, 7718215), (5, 6174572), (10, 3087286), (20, 1543643), (199, 155140), (398, 77570), (796, 38785), (995, 31028), (1990, 15514), (3980, 7757)]