55720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{199}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 144000

約数和(自身を除く): 88280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 199, 280, 398, 796, 995, 1393, 1592, 1990, 2786, 3980, 5572, 6965, 7960, 11144, 13930, 27860, 55720]

約数ペア:

[(1, 55720), (2, 27860), (4, 13930), (5, 11144), (7, 7960), (8, 6965), (10, 5572), (14, 3980), (20, 2786), (28, 1990), (35, 1592), (40, 1393), (56, 995), (70, 796), (140, 398), (199, 280)]