256744040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{4751}}^1$

素因数の和:4962

約数の個数: 64

約数和(自身を含む): 663759360

約数和(自身を除く): 407015320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 193, 280, 386, 772, 965, 1351, 1544, 1930, 2702, 3860, 4751, 5404, 6755, 7720, 9502, 10808, 13510, 19004, 23755, 27020, 33257, 38008, 47510, 54040, 66514, 95020, 133028, 166285, 190040, 266056, 332570, 665140, 916943, 1330280, 1833886, 3667772, 4584715, 6418601, 7335544, 9169430, 12837202, 18338860, 25674404, 32093005, 36677720, 51348808, 64186010, 128372020, 256744040]

約数ペア:

[(1, 256744040), (2, 128372020), (4, 64186010), (5, 51348808), (7, 36677720), (8, 32093005), (10, 25674404), (14, 18338860), (20, 12837202), (28, 9169430), (35, 7335544), (40, 6418601), (56, 4584715), (70, 3667772), (140, 1833886), (193, 1330280), (280, 916943), (386, 665140), (772, 332570), (965, 266056), (1351, 190040), (1544, 166285), (1930, 133028), (2702, 95020), (3860, 66514), (4751, 54040), (5404, 47510), (6755, 38008), (7720, 33257), (9502, 27020), (10808, 23755), (13510, 19004)]