12732020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{457}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 30777600

約数和(自身を除く): 18045580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 457, 796, 914, 995, 1393, 1828, 1990, 2285, 2786, 3199, 3980, 4570, 5572, 6398, 6965, 9140, 12796, 13930, 15995, 27860, 31990, 63980, 90943, 181886, 363772, 454715, 636601, 909430, 1273202, 1818860, 2546404, 3183005, 6366010, 12732020]

約数ペア:

[(1, 12732020), (2, 6366010), (4, 3183005), (5, 2546404), (7, 1818860), (10, 1273202), (14, 909430), (20, 636601), (28, 454715), (35, 363772), (70, 181886), (140, 90943), (199, 63980), (398, 31990), (457, 27860), (796, 15995), (914, 13930), (995, 12796), (1393, 9140), (1828, 6965), (1990, 6398), (2285, 5572), (2786, 4570), (3199, 3980)]